Questions on the astronomical applications of Mathematica.

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13
votes
3answers
2k views

How do I compute sidereal time and JD?

There was once a package that provided a wide range of functions for computing astronomical information. This package now appears to be out of date; but as near as I can tell, many of the useful ...
25
votes
3answers
3k views

Composition: how to make a day and night world map?

Given the following world images: ...
5
votes
2answers
263 views

Why is Neptune missing from AstronomicalData?

An old notebook I've recently started working with has a strange error: Prior to version 8, a figure I generated using Drop[AstronomicalData["Planet"],-1] to ...