@rhannequin.bsky.social
✂️ Excerpt generator
Ephemerides can be large models, from a few dozens to several hundreds of MB.
What if you only need a small time range, or only the data from the Sun?
Ephem now provides a CLI to generate an excerpt file, which leads to better performance and a smaller disk space footprint.
Ephemerides can be large models, from a few dozens to several hundreds of MB.
What if you only need a small time range, or only the data from the Sun?
Ephem now provides a CLI to generate an excerpt file, which leads to better performance and a smaller disk space footprint.
April 2, 2025 at 2:37 PM
✂️ Excerpt generator
Ephemerides can be large models, from a few dozens to several hundreds of MB.
What if you only need a small time range, or only the data from the Sun?
Ephem now provides a CLI to generate an excerpt file, which leads to better performance and a smaller disk space footprint.
Ephemerides can be large models, from a few dozens to several hundreds of MB.
What if you only need a small time range, or only the data from the Sun?
Ephem now provides a CLI to generate an excerpt file, which leads to better performance and a smaller disk space footprint.
🧮 Support for IMCCE INPOP ephemerides
INPOP, the numerical planetary integrator from the Paris Observatory, is one of the most precise and accurate model in the world.
Ephem now supports downloading and loading INPOP models, as it already did for NASA/JPL Development Ephemeris.
INPOP, the numerical planetary integrator from the Paris Observatory, is one of the most precise and accurate model in the world.
Ephem now supports downloading and loading INPOP models, as it already did for NASA/JPL Development Ephemeris.
![Ruby code:
Ephem::Download.call(
name: "inpop19a.bsp",
target: "inpop.bsp"
)
spk = Ephem::SPK.open("inpop.bsp")
# Position of the Earth on 2025-04-02 12:00:00 UTC
spk[0, 399].compute(2460768)
# Vector[
# -146674655.86566246,
# -30764228.725206383,
# -13307886.64786441]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:56437zte3h335rrn7sh2nyro/bafkreifomkzgnvljyfd2v247p7nrpkwdcaezsmpfctlbqr7nlilrogb4ta@jpeg)
April 2, 2025 at 2:37 PM
🧮 Support for IMCCE INPOP ephemerides
INPOP, the numerical planetary integrator from the Paris Observatory, is one of the most precise and accurate model in the world.
Ephem now supports downloading and loading INPOP models, as it already did for NASA/JPL Development Ephemeris.
INPOP, the numerical planetary integrator from the Paris Observatory, is one of the most precise and accurate model in the world.
Ephem now supports downloading and loading INPOP models, as it already did for NASA/JPL Development Ephemeris.