<p>Take a look at <a href="https://matheo.uliege.be/bitstream/2268.2/4623/1/MasterThesis_ThibaultPicha.pdf" rel="nofollow noreferrer">this link</a>. It included Program Codes Listing also (Appendix C). But if you only want the initial mean longitude and the angular veclocity... the appendix C.1 does have them listed at the beginning... in it, the values are L0 and n for each planet... (The n in the listing is in arcsecond, you have to divide it bye 3600 to get your desired degree value.)</p>

CC BY-SA 4.0
2020-06-28T10:26:54.747Z
Excellent source thank you!
skiventist
CC BY-SA 4.0
2020-06-28T00:30:21.643Z
2020-06-28T00:30:21.643Z
Huy Pham
<p>I'm following <a href="https://arxiv.org/pdf/0910.2778.pdf" rel="nofollow noreferrer">this</a> paper to calculate geocentric coordinates. The authors have provided the initial mean longitude values for the planets (provided in attached table) for  01.01.2000 @ 00.00 UT but I'd like Uranus, Neptune, Pluto and some asteroids also. Is there anywhere this information is freely available or did they calculate it? Many thanks.</p>
<p><a href="https://i.sstatic.net/yNlHS.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/yNlHS.png" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2020-06-27T23:36:38.477Z
Have a look at answers to [Where can I find/visualize planets/stars/moons/etc positions?](https://astronomy.stackexchange.com/q/13488/7982)
uhoh
<positional-astronomy>
Where can I get J2000 epoch initial mean longitudes for all planets and celestial bodies?
skiventist
# Where can I get J2000 epoch initial mean longitudes for all planets and celestial bodies?

(Asked by: username_0 on 2020-06-27)

I'm following [this](https://arxiv.org/pdf/0910.2778.pdf) paper to calculate geocentric coordinates. The authors have provided the initial mean longitude values for the planets (provided in attached table) for 01.01.2000 @ 00.00 UT but I'd like Uranus, Neptune, Pluto and some asteroids also. Is there anywhere this information is freely available or did they calculate it? Many thanks.

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

**Tags:** positional-astronomy

> **Comments:**
> **username_1**: Have a look at answers to [Where can I find/visualize planets/stars/moons/etc positions?](https://astronomy.stackexchange.com/q/13488/7982)  

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## 1 answers

### Answer by username_2 on 2020-06-28. Score: 2 | Accepted answer

Take a look at [this link](https://matheo.uliege.be/bitstream/2268.2/4623/1/MasterThesis_ThibaultPicha.pdf). It included Program Codes Listing also (Appendix C). But if you only want the initial mean longitude and the angular veclocity... the appendix C.1 does have them listed at the beginning... in it, the values are L0 and n for each planet... (The n in the listing is in arcsecond, you have to divide it bye 3600 to get your desired degree value.)

> **Comments:**
> **username_0**: Excellent source thank you!  

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