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I have been looking at the Moon position from PyEphem and comparing to Horizons. Unless I am doing something really dumb here, the differences in the Astrometric position relative to an observer are q…
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And add test data from table 27E to test suite.
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```
The HermitLibrary contains a lot of symbols. It seems that there may have been
an encoding issue when somebody committed their data.
Example:
http://moonblink.googlecode.com/svn/trunk/HermitLibr…
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We need a fast algorithm to compute the position of the planets so that we can use in a numerical orbit propagator.
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```
The HermitLibrary contains a lot of symbols. It seems that there may have been
an encoding issue when somebody committed their data.
Example:
http://moonblink.googlecode.com/svn/trunk/HermitLibr…
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[Gravity Engine](http://nbodyphysics.com/blog/) is really neat:
- http://nbodyphysics.com/blog/gravity-engine-doc-1-3-2-2-2/
- http://nbodyphysics.com/blog/gravity-engine-doc-1-3-2-2-2/gravity-engin…
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Need some sort of ephemeris calculation to determine the expected size of a known target and from that the focal length and resolution of the optical train.
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Allowing the user to track objects from the solar system in addition to satellites described by TLE files would allow a wider usage range of flyby. Objects coming to my mind are the following:
- [x…
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> Astronomy Engine is designed to be small, fast, and accurate to within ±1 arcminute. It is based on the authoritative and well-tested models [VSOP87](https://en.wikipedia.org/wiki/VSOP_(planets)) an…
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Currently all calculations are done in `f64` types, but many users could benefit from less precise f32 calculations, mainly in platforms with smaller word sizes.