https://github.com/behrouzz/vernal
Calculating vernal equinox
https://github.com/behrouzz/vernal
Last synced: 6 months ago
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Calculating vernal equinox
- Host: GitHub
- URL: https://github.com/behrouzz/vernal
- Owner: behrouzz
- Created: 2024-09-08T13:56:22.000Z (almost 2 years ago)
- Default Branch: main
- Last Pushed: 2024-09-15T11:32:38.000Z (almost 2 years ago)
- Last Synced: 2024-09-16T08:22:19.830Z (almost 2 years ago)
- Language: Python
- Size: 2.56 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
**Author:** [Behrouz Safari](https://behrouzz.github.io/)
# vernal
*Calculating vernal equinox*
Folder `vernal/data/de441` contains three files computed with DE441 JPL kernels. Three diffrent rotation matrix have been used to convert from GCRS:
`sofa_bpn.csv`: using BPN 2006/2000 matrix from SOFA
`sofa_mean.csv`: using precession and bias for longterm
`spice_tete.csv`: using internal Spice TETE