🔭 Ephemeris is a .NET library for astronomical calculations — from Julian dates to sunsets, planetary positions to eclipses.
csharp dotnet astronomy eclipse coordinate-systems astrophysics ephemeris telescope nuget-package julian-date sidereal-time meeus celestial-mechanics sunrise-sunset stargazing astronomical-calculations moon-phases planetary-positions messier-catalog observing-planner
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Updated
Mar 21, 2026 - C#