90377 Sedna, or simply Sedna, is a large planetoid in the outer reaches of the Solar System that was, , at a distance of about from the Sun, about three times as far as Neptune. Spectroscopy has revealed that Sedna's surface composition is similar to those of some other trans-Neptunian objects, being largely a mixture of water, methane, and nitrogen ices with tholins. Its surface is one of the reddest among Solar System objects. It is a possible dwarf planet. Sedna is approximately tied with and as the largest planetoid not known to have a moon. For most of its orbit, it is even farther from the Sun than at present, with its aphelion estimated at 937 AU (31 times Neptune's distance, or about 1.5% of a light-year), making it one of the most distant-known objects in the Solar System other than long-period comets.
Introduction
90377 Sedna
90377 Sedna | Introduction
It is a large planetoid, surface is redd. It has a V-band absolute magnitude (H) of about 1.8, and it is estimated to have an albedo of about 0.32; it was the intrinsically brightest object found in the Solar System. It is one of the reddest objects in the Solar System, nearly as red as Mars. It has a V-band absolute magnitude (H) of about 1.8, and it is estimated to have an albedo of about 0.32, thus giving it a diameter of approximately 1,000 km.
where is sedna located in the solar system
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In the outer reaches of the Solar System.
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who discovered it?
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Michael Brown (Caltech), Chad Trujillo (Gemini Observatory), and David Rabinowitz (Yale University).
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who gave it it's name?
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Michael Brown.
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what does it look like?
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Others speculate that it might have been tugged into its current orbit by a passing star, perhaps one within the Sun's birth cluster (an open cluster), or even that it was captured from another star system. Another hypothesis suggests that its orbit may be evidence for a large planet beyond the orbit of Neptune.
90377 Sedna | Introduction
Sedna has an exceptionally long and elongated orbit, taking approximately 11,400 years to complete and a distant point of closest approach to the Sun at 76 AU. These facts have led to much speculation about its origin. The Minor Planet Center currently places Sedna in the scattered disc, a group of objects sent into highly elongated orbits by the gravitational influence of Neptune. This classification has been contested because its perihelion is too large for it to have been scattered by a known planet, leading some astronomers to informally refer to it as the first known member of the inner Oort cloud.
90377 Sedna | Introduction
The team made the name "Sedna" public before the object had been officially numbered. Brian Marsden, the head of the Minor Planet Center, said that such an action was a violation of protocol, and that some members of the IAU might vote against it. No objection was raised to the name, and no competing names were suggested. The IAU's Committee on Small Body Nomenclature accepted the name in September 2004, and also considered that, in similar cases of extraordinary interest, it might in the future allow names to be announced before they were officially numbered.
90377 Sedna | Naming
Its surface is homogeneous in colour and spectrum; this may be because Sedna, unlike objects nearer the Sun, is rarely impacted by other bodies, which would expose bright patches of fresh icy material like that on 8405 Asbolus. Sedna and two other very distant objects – and – share their color with outer classical Kuiper belt objects and the centaur 5145 Pholus, suggesting a similar region of origin. Trujillo and colleagues have placed upper limits in Sedna's surface composition of 60% for methane ice and 70% for water ice. The presence of methane further supports the existence of tholins on Sedna's surface, because they are produced by irradiation of methane.
90377 Sedna | Physical characteristics
Mike Brown and his team favored the hypothesis that Sedna was lifted into its current orbit by a star from the Sun's birth cluster, arguing that Sedna's aphelion of about 1,000 AU, which is relatively close compared to those of long-period comets, is not distant enough to be affected by passing stars at their current distances from the Sun. They propose that Sedna's orbit is best explained by the Sun having formed in an open cluster of several stars that gradually disassociated over time. That hypothesis has also been advanced by both Alessandro Morbidelli and Scott Jay Kenyon. Computer simulations by Julio A.
90377 Sedna | Origin
90377 Sedna, a trans-Neptunian object discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003, is named after her.
Sedna (mythology) | In astronomy
Combining those with precovery observations taken at the Samuel Oschin telescope in August 2003, and from the Near-Earth Asteroid Tracking consortium in 2001–2002, allowed accurate determination of its orbit. The calculations showed that the object was moving along a distant highly eccentric orbit, at a distance of 90.3 AU from the Sun. Precovery images have later been found in images of the Palomar Digitized Sky Survey dating back to 25 September 1990.
90377 Sedna | Discovery
Fernandez and Adrian Brunini suggest that multiple close passes by young stars in such a cluster would pull many objects into Sedna-like orbits. A study by Morbidelli and Levison suggested that the most likely explanation for Sedna's orbit was that it had been perturbed by a close (approximately 800 AU) pass by another star in the first 100 million years or so of the Solar System's existence.
90377 Sedna | Origin
Brown initially nicknamed Sedna "The Flying Dutchman", or "Dutch", after a legendary ghost ship, because its slow movement had initially masked its presence from his team. For an official name for the object, Brown settled on "Sedna", a name from Inuit mythology, which Brown chose partly because the Inuit were the closest polar culture to his home in Pasadena, and partly because the name, unlike Quaoar, would be easily pronounceable. On his website, he wrote: Brown also suggested to the International Astronomical Union's (IAU) Minor Planet Center that any future objects discovered in Sedna's orbital region should also be named after entities in arctic mythologies.
90377 Sedna | Naming
The former name was later used for 90377 Sedna, a distant trans-Neptunian object discovered in 2003.
Siarnaq | Naming
Because Sedna has no known moons, determining its mass is currently impossible without sending a space probe. Sedna is currently the largest trans-Neptunian Sun-orbiting object not known to have a satellite. Only a single attempt has been made to find a satellite, and it has been suggested that there is a chance of up to 25% that a satellite could have been missed. Observations from the SMARTS telescope show that in visible light Sedna is one of the reddest objects in the Solar System, nearly as red as Mars. Chad Trujillo and his colleagues suggest that Sedna's dark red colour is caused by a surface coating of hydrocarbon sludge, or tholin, formed from simpler organic compounds after long exposure to ultraviolet radiation.
90377 Sedna | Physical characteristics
90377 Sedna (520 AU average) is a large, reddish object with a gigantic, highly elliptical orbit that takes it from about 76 AU at perihelion to 940 AU at aphelion and takes 11,400 years to complete. Mike Brown, who discovered the object in 2003, asserts that it cannot be part of the scattered disc or the Kuiper belt because its perihelion is too distant to have been affected by Neptune's migration. He and other astronomers consider it to be the first in an entirely new population, sometimes termed "distant detached objects" (DDOs), which also may include the object , which has a perihelion of 45 AU, an aphelion of 415 AU, and an orbital period of 3,420 years.
Solar System | Detached objects
At 38 K, the N vapor pressure would be 14 microbar (1.4 Pa or 0.000014 atm). Its deep red spectral slope is indicative of high concentrations of organic material on its surface, and its weak methane absorption bands indicate that methane on Sedna's surface is ancient, rather than freshly deposited. This means that Sedna is too cold for methane to evaporate from its surface and then fall back as snow, which happens on Triton and probably on Pluto.
90377 Sedna | Physical characteristics
90377 Sedna, or simply Sedna, is a large planetoid in the outer reaches of the Solar System that was, , at a distance of about from the Sun, about three times as far as Neptune. Spectroscopy has revealed that Sedna's surface composition is similar to those of some other trans-Neptunian objects, being largely a mixture of water, methane, and nitrogen ices with tholins. Its surface is one of the reddest among Solar System objects. It is a possible dwarf planet. Sedna is approximately tied with and as the largest planetoid not known to have a moon. For most of its orbit, it is even farther from the Sun than at present, with its aphelion estimated at 937 AU (31 times Neptune's distance, or about 1.5% of a light-year), making it one of the most distant-known objects in the Solar System other than long-period comets.
90377 Sedna | Introduction
Sedna has a V-band absolute magnitude (H) of about 1.8, and it is estimated to have an albedo of about 0.32, thus giving it a diameter of approximately 1,000 km. At the time of its discovery it was the intrinsically brightest object found in the Solar System since Pluto in 1930. In 2004, the discoverers placed an upper limit of 1,800 km on its diameter, but by 2007 this was revised downward to less than 1,600 km after observation by the Spitzer Space Telescope. In 2012, measurements from the Herschel Space Observatory suggested that Sedna's diameter was , which would make it smaller than Pluto's moon Charon.
90377 Sedna | Physical characteristics
Sedna (provisionally designated ) was discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory), and David Rabinowitz (Yale University) on 14 November 2003. The discovery formed part of a survey begun in 2001 with the Samuel Oschin telescope at Palomar Observatory near San Diego, California, using Yale's 160-megapixel Palomar Quest camera. On that day, an object was observed to move by 4.6 arcseconds over 3.1 hours relative to stars, which indicated that its distance was about 100 AU. Follow-up observations were made in November–December 2003 with the SMARTS telescope at Cerro Tololo Inter-American Observatory in Chile, the Tenagra IV telescope in Nogales, Arizona, and the Keck Observatory on Mauna Kea in Hawaii.
90377 Sedna | Discovery
"I call Sedna a fossil record of the earliest Solar System", said Brown in 2006. "Eventually, when other fossil records are found, Sedna will help tell us how the Sun formed and the number of stars that were close to the Sun when it formed." A 2007–2008 survey by Brown, Rabinowitz and Megan Schwamb attempted to locate another member of Sedna's hypothetical population. Although the survey was sensitive to movement out to 1,000 AU and discovered the likely dwarf planet Gonggong, it detected no new sednoid. Subsequent simulations incorporating the new data suggested about 40 Sedna-sized objects probably exist in this region, with the brightest being about Eris's magnitude (−1.0).
90377 Sedna | Population
In their paper announcing the discovery of Sedna, Mike Brown and his colleagues described it as the first observed body belonging to the Oort cloud, the hypothetical cloud of comets thought to exist nearly a light-year from the Sun. They observed that, unlike scattered disc objects such as Eris, Sedna's perihelion (76 AU) is too distant for it to have been scattered by the gravitational influence of Neptune. Because it is a great deal closer to the Sun than was expected for an Oort cloud object, and has an inclination roughly in line with the planets and the Kuiper belt, they described the planetoid as being an "inner Oort cloud object", situated in the disc reaching from the Kuiper belt to the spherical part of the cloud.
90377 Sedna | Origin
Sedna was later surpassed by Eris, which was detected by the same survey near aphelion at 97 AU. The orbits of some long-period comets extend farther than that of Sedna; they are too dim to be discovered except when approaching perihelion in the inner Solar System. Even as Sedna nears its perihelion in mid-2076, the Sun would appear merely as an extremely bright star-like pinpoint in its sky, 100 times brighter than a full moon on Earth (for comparison, the Sun appears from Earth to be roughly 400,000 times brighter than the full Moon), and too far away to be visible as a disc to the naked eye.
90377 Sedna | Orbit and rotation
When first discovered, Sedna was thought to have an unusually long rotational period (20 to 50 days). It was initially speculated that Sedna's rotation was slowed by the gravitational pull of a large binary companion, similar to Pluto's moon Charon. A search for such a satellite by the Hubble Space Telescope in March 2004 found nothing, and subsequent measurements from the MMT telescope suggest a much shorter rotation period of about 10 hours, more typical for a body of its size.
90377 Sedna | Orbit and rotation
This question was answered under the International Astronomical Union definition of a planet, adopted on 24 August 2006, which mandated that a planet must have cleared the neighborhood around its orbit. Sedna has a Stern–Levison parameter estimated to be much less than 1, and therefore cannot be considered to have cleared the neighborhood, even though no other objects have yet been discovered in its vicinity. To be a dwarf planet, Sedna must be in hydrostatic equilibrium. It is bright enough, and therefore large enough, that this is expected to be the case, and several astronomers have called it one.
90377 Sedna | Classification
Sedna's highly elliptical orbit means that the probability of its detection was roughly 1 in 80, which suggests that, unless its discovery was a fluke, another 40–120 Sedna-sized objects would exist within the same region. Another object, , has a similar but less extreme orbit: it has a perihelion of 44.3 AU, an aphelion of 394 AU, and an orbital period of 3,240 years. It may have been affected by the same processes as Sedna. Each of the proposed mechanisms for Sedna's extreme orbit would leave a distinct mark on the structure and dynamics of any wider population. If a trans-Neptunian planet was responsible, all such objects would share roughly the same perihelion (about 80 AU).
90377 Sedna | Population
Sedna has the second longest orbital period of any known object in the Solar System of comparable size or larger, calculated at around 11,400 years. Its orbit is extremely eccentric, with an aphelion estimated at 937 AU and a perihelion at about 76 AU. This perihelion was the largest of that of any known Solar System object until the discovery of . At its aphelion, Sedna orbits the Sun at a mere 1.3% of Earth's orbital speed. When Sedna was discovered it was 89.6 AU from the Sun approaching perihelion, and was the most distant object in the Solar System observed.
90377 Sedna | Orbit and rotation
If Sedna were captured from another planetary system that rotated in the same direction as the Solar System, then all of its population would have orbits on relatively low inclinations and have semi-major axes ranging from 100 to 500 AU. If it rotated in the opposite direction, then two populations would form, one with low and one with high inclinations. The perturbations from passing stars would produce a wide variety of perihelia and inclinations, each dependent on the number and angle of such encounters. Acquiring a larger sample of such objects would help in determining which scenario is most likely.
90377 Sedna | Population
If Sedna formed in its current location, the Sun's original protoplanetary disc must have extended as far as 75 AU into space. Also, Sedna's initial orbit must have been approximately circular, otherwise its formation by the accretion of smaller bodies into a whole would not have been possible, because the large relative velocities between planetesimals would have been too disruptive. Therefore, it must have been tugged into its current eccentric orbit by a gravitational interaction with another body. In their initial paper, Brown, Rabinowitz and colleagues suggested three possible candidates for the perturbing body: an unseen planet beyond the Kuiper belt, a single passing star, or one of the young stars embedded with the Sun in the stellar cluster in which it formed.
90377 Sedna | Origin
Sedna will come to perihelion around 2075–2076. This close approach to the Sun provides an opportunity for study that will not occur again for 12,000 years. Although Sedna is listed on NASA's Solar System exploration website, NASA is not known to be considering any type of mission at this time. It was calculated that a flyby mission to Sedna could take 24.48 years using a Jupiter gravity assist, based on launch dates of 6 May 2033 or 23 June 2046. Sedna would be 77.27 or 76.43 AU from the Sun when the spacecraft arrived near the end of 2057 or 2073, respectively.
90377 Sedna | Exploration
The Minor Planet Center, which officially catalogs the objects in the Solar System, classifies Sedna as a scattered object. This grouping is heavily questioned, and many astronomers have suggested that it, together with a few other objects (e.g. ), be placed in a new category of distant objects named "extended scattered disc objects" (E-SDO), "detached objects", "distant detached objects" (DDO), or "scattered-extended" in the formal classification by the Deep Ecliptic Survey. The discovery of Sedna resurrected the question of which astronomical objects should be considered planets and which should not. On 15 March 2004, articles on Sedna in the popular press reported that a tenth planet had been discovered.
90377 Sedna | Classification
The Minor Planet Center classifies the trans-Neptunian object 90377 Sedna as a scattered-disc object. Its discoverer Michael E. Brown has suggested instead that it should be considered an inner Oort-cloud object rather than a member of the scattered disc, because, with a perihelion distance of 76 AU, it is too remote to be affected by the gravitational attraction of the outer planets. Sedna is not the only such object: (discovered before Sedna) and have a perihelion too far away from Neptune to be influenced by it. This led to a discussion among astronomers about a new minor planet set, called the "extended scattered disc" (E-SDO).
Scattered disc | Detached objects
Barucci and colleagues compared Sedna's spectrum with that of Triton and detected weak absorption bands belonging to methane and nitrogen ices. From these observations, they suggested the following model of the surface: 24% Triton-type tholins, 7% amorphous carbon, 10% nitrogen ices, 26% methanol, and 33% methane. The detection of methane and water ices was confirmed in 2006 by the Spitzer Space Telescope mid-infrared photometry. The presence of nitrogen on the surface suggests the possibility that, at least for a short time, Sedna may have a tenuous atmosphere. During a 200-year period near perihelion, the maximum temperature on Sedna should exceed , the transition temperature between alpha-phase solid N and the beta-phase seen on Triton.
90377 Sedna | Physical characteristics
She also comments on how he looks exactly the same as he did in high school.
Dylan McKay | "90210"
In May 2018, astrophysicist Ethan Siegel publicly advocated for a space probe mission to study Sedna as it approaches perihelion. Siegel characterized Sedna as an attractive target due to its status as a possible inner Oort cloud object. Because of Sedna's long orbital period, "we will not get the opportunity to study it this close to the Sun for many millennia again." Such a mission could be facilitated by Dual-Stage 4-Grid ion thrusters that might cut cruise times considerably if powered, for example, by a fusion reactor.
90377 Sedna | Exploration
According to science writer Govert Schilling, Brown initially wanted to call the object "Lila", after a concept in Hindu mythology that described the cosmos as the outcome of a game played by Brahman. The name was very similar to "Lilah", the name of Brown's newborn daughter. Brown was mindful of not making his name public before it had been officially accepted. He had done so with Sedna a year previously, and had been heavily criticized. However, no objection was raised to the Sedna name other than the breach of protocol, and no competing names were suggested for Sedna. He listed the address of his personal web page announcing the discovery as "/~mbrown/planetlila" and in the chaos following the controversy over the discovery of Haumea, forgot to change it.
Eris (dwarf planet) | Choosing an official name
Other people also confuse Nibiru with Sedna (90377 Sedna) or Eris (136199 Eris), trans-Neptunian objects discovered by Mike Brown in 2003 and 2005 respectively. However, despite having been described as a "tenth planet" in an early NASA press release, Eris (then known only as 2003 UB) is now classified as a dwarf planet. Only slightly more massive than Pluto, Eris has a well-determined orbit that never takes it closer to the Earth than . Sedna is slightly smaller than Pluto, and never comes closer to Earth than . Mike Brown believes the confusion results from both the real Sedna and the imaginary Nibiru having extremely elliptical orbits.
Nibiru cataclysm | Sedna or Eris
It redetected Sedna but no other objects in Sedna-like orbits were identified.
Palomar Distant Solar System Survey | Introduction
Helicase, POLQ-like, also known as hel308 and Holliday junction migration protein, encoded by the gene HEL308, is a DNA helicase found in humans, archea and many other organisms. Its principal function is to allow DNA replication to continue past DNA forks.
Helicase, POLQ-like | Introduction
As of 2018, this minor planet remains unnamed.
(469306) 1999 CD158 | Naming
With an aphelion over 2100 AU, it brings the object further out than Sedna.
Sednoid | Known members
Due to its uncertain orbit, this minor planet has not been numbered. A numbering and subsequent naming will only be considered upon its rediscovery.
1995 SN55 | Numbering and naming
Although Sedna is officially considered a scattered-disc object by the MPC, its discoverer Michael E. Brown has suggested that because its perihelion distance of 76 AU is too distant to be affected by the gravitational attraction of the outer planets it should be considered an inner-Oort-cloud object rather than a member of the scattered disc. This classification of Sedna as a detached object is accepted in recent publications.
Detached object | Classification
The family with sequence similarity 73, member B, also known as FAM73B, is a human gene.
FAM73B | Introduction
The trans-Neptunian object Sedna has an extra-long and unusual elliptical orbit around the Sun, ranging between 76 and 937 AU. Sedna's orbit takes about 11,400 years to complete once. Its discoverer, Michael Brown of Caltech, noted in a "Discover" magazine article that Sedna's location seemed to defy reasoning: "Sedna shouldn't be there", Brown said. "There's no way to put Sedna where it is. It never comes close enough to be affected by the Sun, but it never goes far enough away from the Sun to be affected by other stars." Brown therefore postulated that a massive unseen object may be responsible for Sedna's anomalous orbit.
Nemesis (hypothetical star) | Orbit of Sedna
Hel308 is part of DNA helicase superfamily II, a group of enzymes that wind and unwind DNA. Hel308 is found throughout archea and in some eukaryotes, including humans. It contains twenty exons.
Helicase, POLQ-like | Classification
Family with sequence similarity 87 member B is a protein that in humans is encoded by the FAM87B gene.
Family with sequence similarity 87 member B | Introduction
It is expected to be about half the size of Sedna and similar in size to Huya. Its surface is thought to have a pink tinge, resulting from chemical changes produced by the effect of radiation on frozen water, methane, and carbon dioxide. This optical color is consistent with formation in the gas-giant region and not the classical Kuiper belt, which is dominated by ultra-red colored objects.
2012 VP113 | Classification and physical characteristics
Hel308's principal role is to repair replication-blocking lesions, such as interstrand DNA cross-links that interfere with the forking of DNA during replication. Hel308 is a large protein, 1101 amino acids in length, with five separate domains. The third and fourth domains form a large central pore that holds single-stranded DNA. Its fifth domain acts as a brake by securing the single-strand DNA protruding through this pore.
Helicase, POLQ-like | Structure and function
Mike Brown's website, using a radiometrically determined diameter of , lists it as a possible dwarf planet.
(15874) 1996 TL66 | Introduction
The set included a new front bezel to replace the original SE bezel with that of an SE/30. In the naming scheme used at that time, Apple indicated the presence of a 68030 processor by adding the letter "x" to a model's name. When the Macintosh SE was upgraded with the 68030 processor, this posed an awkward problem; Apple was not willing to name their new computer the "Macintosh SEx". Thus, "SE/30" was the name chosen. Internally, code names such as Green Jade, Fafnir, and Roadrunner were used.
Macintosh SE/30 | Introduction
Sedna is a minor planet discovered by Michael E. Brown, Chad Trujillo and David L. Rabinowitz on 14 November 2003. Spectroscopic measures show that its surface composition is similar to that of other trans-Neptunian objects: It is mainly composed of a mixture of water ices, methane, and nitrogen with tholins. Its surface is one of the reddest in the Solar System. This may be the first detection of a Hills cloud object, depending on the definition used. The area of the Hills cloud is defined as any objects with orbits measuring between 2,000 and 15,000 AU. Sedna is, however, much closer than the supposed distance of the Hills cloud.
Hills cloud | Sedna, the first candidate
In the FASTQ file created by BGI/MGI sequencers using DNA nanoballs on a patterned array flowcell, the read names look like this: BGISEQ-500: codice_1 MGISEQ-2000: codice_2
DNA nanoball sequencing | Read Names
Family with Sequence Similarity 167, Member A is also known as FAM167A, c8orf13, or D8S265.
FAM167A | Aliases
This minor planet was numbered on 2 February 1999 (). As of 2018, it has not been named.
(9948) 1990 QB2 | Naming
906 Repsolda is a minor planet orbiting the Sun. It is named for the German astronomer and fireman Johann Georg Repsold (1770–1830), who founded and ran Hamburg Observatory.
906 Repsolda | Introduction
907 Rhoda is a large background asteroid from the central region of the asteroid belt, that measures approximately in diameter. It was discovered on 12 November 1918, by astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The dark C/X-type asteroid has a long rotation period of 22.4 hours and is likely spherical in shape. It was named after Rhoda Barnard, wife of American astronomer Edward Emerson Barnard (1857–1923).
907 Rhoda | Introduction
This minor planet was numbered on 19 September 1994 (). As of 2018, it has not been named.
(6090) 1989 DJ | Numbering and naming
Top7 is an artificial 93-residue protein, classified as a "de novo" protein since it was designed by Brian Kuhlman and Gautam Dantas in David Baker's laboratory at the University of Washington to have a unique fold not found in nature. The protein was designed "ab initio" on a computer with the help of protein structure prediction algorithms. Determination of the high-resolution X-ray structure of the experimentally expressed and purified protein revealed that the structure (PDB ID: 1QYS) was indeed very similar (1.2 Å RMSD) to the computer-designed model. The structure consists of two alpha helices packed on a five-stranded anti-parallel beta sheet.
Top7 | Introduction
T800 may refer to: Also referred to as the "Clevon Brown" model.
T800 | Introduction
Apotoforma cydna is a species of moth of the family Tortricidae. It is found in Venezuela. The wingspan is about 15 mm. The ground colour of the forewings is pale brownish grey with an ash-grey hue and some fine brown-grey transverse strigulae along the costa and two reddish dots in the postbasal area. The costa is spotted grey with a row of black scales. The hindwings are greyish brown.
Apotoforma cydna | Introduction
Teg147 RNA (also known as sRNA85, SAOUHSCs103) is a non-coding RNA identified by RNA-seq in Staphylococcus aureus N315 with homologues in other Staphylococcus species.
Teg147 | Introduction
DnaJ (Hsp40) homolog, subfamily C, member 13, also known as DNAJC13, is a human gene.
DNAJC13 | Introduction
90732 was named "Vulcan" after the Vulcan Foundry.
BR ex-WD Austerity 2-8-0 | Naming
On a September 23, 2016, episode of the ABC News program "20/20", Chapel Hill police released an image generated by Parabon NanoLabs, a genetic testing company in Reston, Virginia, of what the suspect who left the semen might look like based purely on the phenotype in his DNA profile. Parabon's president told ABC that Snapshot, the program his company used to create the image, "predicts eye color, hair color, skin color, freckling, face morphology and ancestry." The image included a chart listing the probability that the suspect had the traits he was assigned. According to the image, the suspect was "very strongly Native American and European mixed ancestry or Latino." Most of his genetic markers pointed to Mexican, Colombian and Iberian ancestry, with some other South American and African countries making up the balance.
Faith Hedgepeth homicide | Image of suspect generated from DNA profile
This minor planet was numbered by the Minor Planet Center on 8 March 1993 (). As of 2018, it has not been named.
(5476) 1989 TO11 | Numbering and naming
This minor planet was numbered on 31 August 1999 (). As of 2018, it has not been named.
(11395) 1998 XN77 | Naming
When first reported, Hel308 was called "Holliday junction migration protein." It is also called HelQ in "Caenorhabditis elegans" and humans. Like many proteins, Hel308 was named after a previously discovered protein to which it had some connection. In this case, the "Hel" stands for "human helicase" and the "308" is a reference to the "Drosophila melanogaster" protein Mus308, to which it is homologous.
Helicase, POLQ-like | Nomenclature
Family with sequence similarity 180 is a Homo sapiens protein that is encoded by the FAM180b gene also known as LOC399888. It is located on the positive DNA strand in Chromosome 11p11.2 (47,586,651 – 47,589,194) and is 1403 nucleotides long. The gene also has 3 exons.
FAM180b | Gene
It is 548 million years years old with a high projected rotational velocity of 115 km/s, giving it an oblate shape with an equatorial bulge that is 5% larger than the polar radius. HD 95370 has double the mass of the Sun and 2.6 times the Sun's radius. It is radiating 55 times the Sun's luminosity from its photosphere at an effective temperature of 8,696 K.
HD 95370 | Introduction
The "DNAJC30" gene is an intronless gene composed of only one exon, with the chromosome location 7q11.23 in humans. Its open reading frame (ORF) consists of 681 bp in the human cDNA and 660 bp in the mouse cDNA, which encode proteins of 226 and 219 residues, respectively. They are members of the DNAJ molecular chaperone homology domain-containing protein family.
DNAJC30 | Structure
Code page 907 is code page developed by IBM. It is used to write APL programming language.
Code page 907 | Introduction
While there are no commonly associated or known aliases, an important paralog of this gene is ZNF875
ZNF337 | Introduction
Kavelaars contacted the author of the tale, Michael Kusugak, to get his assent, and the latter also suggested the names for Kiviuq and 90377 Sedna.
Ijiraq (moon) | Name
Long intergenic non-protein coding RNA 327 is a protein that in humans is encoded by the LINC00327 gene.
LINC00327 | Introduction
This minor planet was numbered on 1 September 1993 (). As of 2018, it has not been named.
(5648) 1990 VU1 | Numbering and naming
, provisional designation " is a mid-sized Jupiter trojan from the Trojan camp, approximately in diameter. It was discovered on 2 October 1989, by American astronomer Schelte Bus at the Cerro Tololo Inter-American Observatory in Chile. The dark Jovian asteroid has a rotation period of 5.8 hours. It has not been named since its numbering in March 1993.
(5476) 1989 TO11 | Introduction
This line of inquiry eventually led to the hypothesis of Planet Nine. Brown has stated that it is more likely that one or more non-companion stars, passing near the Sun billions of years ago, could have pulled Sedna out into its current orbit. In 2004, Kenyon forwarded this explanation after analysis of Sedna's orbital data and computer modeling of possible ancient non-companion star passes.
Nemesis (hypothetical star) | Orbit of Sedna
Only the second half of the table is shown, codes 0-127 are identical to code page 437.
Code page 907 | Character set
In 2014, mitochondrial DNA that matched that of one of Eddowes's descendants was extracted from a shawl said to have come from the scene of her murder. The DNA match was based on one of seven small segments taken from the hypervariable regions. The segment contained a sequence variation described as 314.1C, and claimed to be uncommon, with a frequency of only 1 in 290,000 worldwide. However, Professor Sir Alec Jeffreys and others pointed out this was in fact an error in nomenclature for the common sequence variation 315.1C, which is present in more than 99% of the sequences in the EMPOP database.
Catherine Eddowes | DNA analysis
This minor planet was numbered on 9 September 1995 (). As of 2018, it has not been named.
(6545) 1986 TR6 | Numbering and naming
SN 1993J is a supernova observed in the galaxy M81. It was discovered on 28 March 1993 by F. Garcia in Spain. At the time, it was the second-brightest type II supernova observed in the twentieth century behind SN 1987A. The spectral characteristics of the supernova changed over time. Initially, it looked more like a type II supernova (a supernova formed by the explosion of a giant star) with strong hydrogen spectral line emission, but later the hydrogen lines faded and strong helium spectral lines appeared, making the supernova look more like a type Ib. Moreover, the variations in SN 1993J's luminosity over time were not like the variations observed in other type II supernovae but did resemble the variations observed in type Ib supernovae.
SN 1993J | Introduction
There is also a DNAse cluster (score =1000) present within the promoter sequence.
ZNF337 | Promoter
"" is an assumed C-type asteroid. It has a typical V–I color index of 0.906 "(see table below)".
(15977) 1998 MA11 | Physical characteristics
" is an assumed C-type asteroid. It has a V–I color index of 0.85, slightly below that seen for most Jovian D-type asteroids "(also seen table below)".
(4715) 1989 TS1 | Physical characteristics
The Selene I was designed by Tom Tjaarda. shown at the Turin Motor Show in 1959 and had a lot of similarities with the Renault Project 900 concept, in that it had a cab forward design with a large rear area for the engine. This style would make the car look like the front was the rear and vice versa. The car could seat six people - two up front, and four in the back facing each other. No engine was fitted to this concept.
Ghia Selene | Selene I
This minor planet was numbered by the Minor Planet Center on 30 August 2004 (). As of 2018, it has not been named.
(85182) 1991 AQ | Numbering and naming
FAM71F2 is also referred to as family with sequence similarity 137 member B, FAM137B.
FAM71F2 | Common aliases
It is an F-type main-sequence star with a class of F5V.
HD 125628 | Introduction
The consecutive initial letters of these minor-planet names spell out "MarsdenB".
1231 Auricula | Naming
Uncharacterized protein C17orf50 is a protein which in humans is encoded by the "C17orf50" gene.
C17orf50 | Introduction
This minor planet was numbered on 18 March 1992 (). As of 2018, it has not been named.
(5119) 1988 RA1 | Numbering and naming
No digits other than 1, 2, and 3 appear in the sequence, unless the seed number contains such a digit or a run of more than three of the same digit.
Look-and-say sequence | Digits presence limitation
C15orf32, which stands for chromosome 15 open reading frame 32, is a gene on the plus strand of chromosome 15, on the cytogenetic band 15q26.1. C15orf32 is 29,464 bases long; on Genome Reference Consortium Human Build 38, it spans bases 92,471,654-92,501,117. It contains 3 exons.
Uncharacterized protein C15orf32 | Gene
Chromosome 11 open reading frame 87 is a protein that in humans is encoded by the C11orf87 gene.
C11orf87 | Introduction
, also written as (52747) 1998 HM151, is a cubewano. It has a perihelion (closest approach to the Sun) at 41.902 AU and an aphelion (farthest approach from the Sun) at 47.500 AU. It is 116 km in diameter. It was discovered on April 29, 1998, at the Mauna Kea Observatory, Hawaii.
(52747) 1998 HM151 | Introduction
In both the Tholen- and SMASS-like taxonomy of the Small Solar System Objects Spectroscopic Survey (S3OS2), " is a dark D-type asteroid, the dominant spectral type among the larger Jupiter trojans. It has a typical V–I color index of 0.90.
(5648) 1990 VU1 | Physical characteristics
904 Rockefellia ("prov. designation": "or" ) is a dark and large background asteroid from the outer regions of the asteroid belt, that measures approximately in diameter. It was discovered on 29 October 1918, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory. The carbonaceous C-type asteroid (Ch) has a rotation period of 6.8 hours and is rather spherical in shape. It was named after American philanthropist and oil industrialist John D. Rockefeller (1839–1937).
904 Rockefellia | Introduction
C16orf90 or Chromosome 16 open reading frame 90 has no aliases and spans 3169 nucleotides from 3,493,484 - 3,496,652 on the short arm of chromosome 16. It is located in position 16p13.3 on the reverse strand. There are 3 exons and the mRNA strand contains 972 base pairs. The C16orf90 protein is 182 amino acids in length.
C16orf90 | Gene
Subclade N1a1 is associated with mutation 16147A. Palanichamy calculates N1a1 to have emerged between 8900 and 22400 YBP (Years Before Present). Subclade N1a1a is denoted by marker 16320, and is therefore associated with the European N1a branch. Petraglia estimates that N1a1a arose between 11000 and 25000 YBP.
Haplogroup N1a (mtDNA) | Tree
This minor planet is named after a Feminine Russian first name. Any reference of this name to a person or occurrence is unknown.
882 Swetlana | Naming
, also written as (126154) 2001 YH140, is a resonant trans-Neptunian object discovered on 18 December 2001, by American astronomers Chad Trujillo and Michael Brown at the Palomar Observatory in California. It measures approximately 345 kilometers in diameter.
(126154) 2001 YH140 | Introduction
An alternative name for this gene is FLJ32702, however it is most commonly referred to as C16orf46.
C16orf46 | Gene
C3orf14 is also known by the aliases LOC57415, FLJ94553 and FLJ17473. Gene orthologs found in other organisms are usually known by the name c3orf14-like, though some are known as LOC57415-like or HT021-like (protein name).
C3orf14 | Gene aliases