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Viewing solar eclipses in the far past (first few centuries AD), we see the shadow path shown in the Solar eclipses window doesn't match the simulated view from the given location. See screenshot belo…
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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…