Objective-C Astronomy Library

Question

I need to do some moonrise azimuth and time calculations. Can anyone recommend a good astronomy library, preferably in Objective-C?

Answer 1

Maybe code of opensource projects could fit you? Recently on FLOSS-Weekly was a discussion about Stellarium.

Disclaimer: I didn't look at that source of Stellarium so I have no idea if it is useful at all and unfortunately it is written in C/C++.

Answer 2

There's an old C library called Astrolog that can probably do some of the stuff you're asking. You can check it out here: http://www.astrolog.org/astrolog.htm

Answer 3

Its not in objective C but the library included in the pyephem package is quite good. The C source files were taken from the old X windows xephem program with glue added to make the functions available from within Python. As long as you don't require super-high accuracy, these routines will probably work for you.

http://rhodesmill.org/pyephem/