This answer to Compute Planet's Apparent Visual Magnitude reports the new work on planetary magnitudes, and contains an intriguing blurb about Neptune: Neptune keeps getting brighter. No one knows why. So I'd like to ask: How fast is Neptune getting brighter? When was was this first noticed a...

I'm writing a tiny Python library that fetches data from Horizons, JPL's solar system data and ephemeris computation service. An overview of their batch CGI is here. While the script is simple, I would like to make it as clear and standardized as possible. The idea is to initialize the HorizonsRe...