<p>There is a example <a href="http://ogleearth.com/2013/02/reconstructing-the-chelyabinsk-meteors-path-with-google-earth-youtube-and-high-school-math/" rel="nofollow">here</a> of the process required. But basically you need observations of the track from two locations and then just perform some relatively simple trigonometric triangulation. The <a href="http://www.nemetode.org/" rel="nofollow">Nemetode</a> network regularly does this using images from a network of cctv cameras. </p>

CC BY-SA 3.0
2016-08-11T11:51:21.037Z
2016-08-11T11:51:21.037Z
James Screech
<p>Also, in which altitude did fireball went thermal explosion?</p>

CC BY-SA 3.0
2016-08-11T12:37:32.543Z
What do you mean by "entrance altitude to Earth's atmosphere"? Are you asking at what height Earth's atmosphere ends?
zephyr
CC BY-SA 3.0
2016-08-11T13:26:51.213Z
Or do you mean angle?
called2voyage
CC BY-SA 3.0
2016-08-11T13:33:33.927Z
I was going to suggest the [JPL Fireballs page](http://neo.jpl.nasa.gov/fireballs/) which records detected explosions. Typically 30-40 km altitude (highly variable) and as much as a few kilotonnes of impact energy. (The Chelyabinsk meteor is on the list too.)
Andy
<meteor><meteor-shower>
How to calculate a meteor's entrance altitude to Earth's atmosphere?
Deniz da King
# How to calculate a meteor's entrance altitude to Earth's atmosphere?

(Asked by: username_0 on 2016-08-11)

Also, in which altitude did fireball went thermal explosion?

**Tags:** meteor, meteor-shower

> **Comments:**
> **username_1**: What do you mean by "entrance altitude to Earth's atmosphere"? Are you asking at what height Earth's atmosphere ends?  
> **username_2**: Or do you mean angle?  
> **username_3**: I was going to suggest the [JPL Fireballs page](http://neo.jpl.nasa.gov/fireballs/) which records detected explosions. Typically 30-40 km altitude (highly variable) and as much as a few kilotonnes of impact energy. (The Chelyabinsk meteor is on the list too.)  

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## 1 answers

### Answer by username_4 on 2016-08-11. Score: 1 | Accepted answer

There is a example [here](http://ogleearth.com/2013/02/reconstructing-the-chelyabinsk-meteors-path-with-google-earth-youtube-and-high-school-math/) of the process required. But basically you need observations of the track from two locations and then just perform some relatively simple trigonometric triangulation. The [Nemetode](http://www.nemetode.org/) network regularly does this using images from a network of cctv cameras.


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