<p>The SWAN C/2020 F8 comet is passing near Earth, but its magnitude will be around 5. This means that you need to have a rather dark sky and good enough eyes to be able to see it.</p>

<p><a href="https://cobs.si/analysis2?col=comet_id&amp;id=1876&amp;plot_type=0" rel="nofollow noreferrer">From the comet observer's database</a></p>

<p><a href="https://i.sstatic.net/WosQ7.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/WosQ7.png" alt="enter image description here"></a></p>

<p>In addition to this, the comet will be very low on the horizon during the night. Here is its track from <a href="https://en.wikipedia.org/wiki/C/2020_F8_(SWAN)#/media/File:C2020_F8-skypath.png" rel="nofollow noreferrer">Wikipedia</a></p>

<p><a href="https://i.sstatic.net/Tf12G.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/Tf12G.jpg" alt="enter image description here"></a></p>

<p>Early June (when it will be rather bright), SWAN will pass near Capella which is roughly 15-20° above the North-West horizon at 22:30. This means that you need to have a pretty clear horizon to see it.</p>

<hr>

<p>TL;DR : It will be visible by the naked eye if you have a clear horizon and a dark sky. So it won't become easily visible by eye at any point in time during this pass near the Sun. </p>

CC BY-SA 4.0
2020-05-18T11:51:42.803Z
Wow thanks, and what a stunning chart! Okay I'll [throw my 8x42 binoculars](https://astronomy.stackexchange.com/q/34026/7982) at it and see what happens. Thanks!
uhoh
CC BY-SA 4.0
2020-05-18T11:36:47.483Z
2020-05-18T11:36:47.483Z
usernumber
<p>The New York Times article <a href="https://www.nytimes.com/2020/05/12/science/comet-swan.html" rel="nofollow noreferrer">How to See Comet SWAN in Night Skies</a> says:</p>

<blockquote>
  <p>Astronomers have their fingers crossed that the comet will keep brightening in the coming weeks as it heads north, passing 52 million miles from Earth on May 12 at its closest approach to our planet, and then rounding the sun on May 27.</p>
</blockquote>

<p>and links to the comet's <a href="https://twitter.com/c2020f8" rel="nofollow noreferrer">twitter account</a> which is tweeting non-specific updates every few hours.</p>

<p>On May 12, 2020 <a href="https://minorplanetcenter.net/mpec/K20/K20G94.html" rel="nofollow noreferrer">https://minorplanetcenter.net/mpec/K20/K20G94.html</a> puts the comet at</p>

<pre><code>Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2020 05 12    01 17 42.4 +14 52 01   0.5572  0.5849    28.5   124.4   4.4
</code></pre>

<p>about R.A 1h 17m and Dec +14° 52' and an estimated magnitude of about +4.4 (if I'm understanding this correctly) and the JPL Horizons database puts it at </p>

<pre><code> Date__(UT)__HR:MN, Date_________JDUT, , , R.A._(ICRF), DEC_(ICRF),  Azi_(a-app), Elev_(a-app),   T-mag, N-mag,             delta,     deldot,     S-O-T,/r,     S-T-O,

2020-May-12 00:00, 2458981.500000000,*,m,    19.54137,   15.02829,   105.324535,    61.907026,      9.,  n.a.,  8.3196461568E+07, -3.4857438,   28.4079,/L,  124.6636,
</code></pre>

<p>But I'd like to ask if Comet SWAN C/2020 F8 is likely to become easily visible by eye at any point in time during this pass near the Sun.</p>

<amateur-observing><comets><apparent-magnitude>
How is Comet SWAN C/2020 F8 doing? Will it become easily visible by eye?
uhoh
# How is Comet SWAN C/2020 F8 doing? Will it become easily visible by eye?

(Asked by: username_0 on 2020-05-18)

The New York Times article [How to See Comet SWAN in Night Skies](https://www.nytimes.com/2020/05/12/science/comet-swan.html) says:

> Astronomers have their fingers crossed that the comet will keep brightening in the coming weeks as it heads north, passing 52 million miles from Earth on May 12 at its closest approach to our planet, and then rounding the sun on May 27.

and links to the comet's [twitter account](https://twitter.com/c2020f8) which is tweeting non-specific updates every few hours.

On May 12, 2020 <https://minorplanetcenter.net/mpec/K20/K20G94.html> puts the comet at

```
Date    TT    R. A. (2000) Decl.     Delta      r    Elong.  Phase   m1    m2
2020 05 12    01 17 42.4 +14 52 01   0.5572  0.5849    28.5   124.4   4.4

```

about R.A 1h 17m and Dec +14° 52' and an estimated magnitude of about +4.4 (if I'm understanding this correctly) and the JPL Horizons database puts it at

```
 Date__(UT)__HR:MN, Date_________JDUT, , , R.A._(ICRF), DEC_(ICRF),  Azi_(a-app), Elev_(a-app),   T-mag, N-mag,             delta,     deldot,     S-O-T,/r,     S-T-O,

2020-May-12 00:00, 2458981.500000000,*,m,    19.54137,   15.02829,   105.324535,    61.907026,      9.,  n.a.,  8.3196461568E+07, -3.4857438,   28.4079,/L,  124.6636,

```

But I'd like to ask if Comet SWAN C/2020 F8 is likely to become easily visible by eye at any point in time during this pass near the Sun.

**Tags:** amateur-observing, comets, apparent-magnitude


---

## 1 answers

### Answer by username_1 on 2020-05-18. Score: 1 | Accepted answer

The SWAN C/2020 F8 comet is passing near Earth, but its magnitude will be around 5. This means that you need to have a rather dark sky and good enough eyes to be able to see it.

[From the comet observer's database](https://cobs.si/analysis2?col=comet_id&id=1876&plot_type=0)

[![enter image description here](https://i.sstatic.net/WosQ7.png)](https://i.sstatic.net/WosQ7.png)

In addition to this, the comet will be very low on the horizon during the night. Here is its track from [Wikipedia](https://en.wikipedia.org/wiki/C/2020_F8_(SWAN)#/media/File:C2020_F8-skypath.png)

[![enter image description here](https://i.sstatic.net/Tf12G.jpg)](https://i.sstatic.net/Tf12G.jpg)

Early June (when it will be rather bright), SWAN will pass near Capella which is roughly 15-20° above the North-West horizon at 22:30. This means that you need to have a pretty clear horizon to see it.

---

TL;DR : It will be visible by the naked eye if you have a clear horizon and a dark sky. So it won't become easily visible by eye at any point in time during this pass near the Sun.

> **Comments:**
> **username_0**: Wow thanks, and what a stunning chart! Okay I'll [throw my 8x42 binoculars](https://astronomy.stackexchange.com/q/34026/7982) at it and see what happens. Thanks!  

---

