# SatelliteToolbox vs AstroLib
**URL:** https://discourse.julialang.org/t/satellitetoolbox-vs-astrolib/88672
**Category:** Astro/Space
**Tags:** question
**Created:** [October 13, 2022, 2:53pm UTC](https://discourse.julialang.org/t/satellitetoolbox-vs-astrolib/88672 "2022-10-13T14:53:59Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@yakir12](https://discourse.julialang.org/u/yakir12)
#### Post date: [October 13, 2022, 2:53pm UTC](https://discourse.julialang.org/t/satellitetoolbox-vs-astrolib/88672/1 "2022-10-13T14:53:59Z")
I was surprised to find zero posts about the intersect between these two packages. Any overlap worth comparing, mentioning, etc?
I’m mostly interested in the azimuth of the sun and moon at specific elevations (for specific coordinates, dates, and times). I’ve been happily using AstroLib. But now I need the _ **magnetic** _ azimuth and therefore found SatelliteToolbox. I was then surprised to find so much overlap, and no issues or comments mentioning each other.
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### Author:  [@giordano](https://discourse.julialang.org/u/giordano)
#### Post date: [October 13, 2022, 11:11pm UTC](https://discourse.julialang.org/t/satellitetoolbox-vs-astrolib/88672/2 "2022-10-13T23:11:15Z")
I’m not sure there is much to say. [`AstroLib.jl`](https://github.com/JuliaAstro/AstroLib.jl) started as a partial translation of the [The IDL Astronomy User’s Library](https://github.com/wlandsman/IDLAstro), colloquially known as “Astrolib” (although nowadays I wouldn’t do that again, I prefer the code to live in more dedicated packages). `SatelliteToolbox` has probably unrelated history and goals.