Celestia Forums

Good Morning

Sorry for my english but I'm french.

I have seen that all the data about planets are in Celestia in the file : solarsys.ssc

I would like to know from which this information comes. From web sites ? Books ?

For example, if I want to make a software of astronomy like Celestia, where I can find this kind of information on the stars and planets.

Thank you.

Planetary orientations are taken from
Explanatory Supplement to the Astronomical Almanac

Planetary orbits are calculated using VSOP87

Salut,

Instead of creating a brand new soft, why don't you enter the Celestia dev team?

For those unwilling to pay for a hardcopy, an electronic preprint of the IAU article with just the planetary information is available at http://astrogeology.usgs.gov/Projects/ISPRS/PREPRINTS/index_preprints.html

Thank you for your answers.

To answer ElChristou I think that I don't have yet the level in programming for the project Celestia. I had to create for my work of diploma a software of simulation of the solar system and I would like to develop it a little more.

Which is the necessary level in C++ language to be able to develop Celestia ?

This may help as well:

Web Ephemerides etcetera
http://aa.usno.navy.mil/data/docs/WebMICA_2.html

http://aa.usno.navy.mil/