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Finish the RK4 numerical integrator
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I tried to load `sat415.bsp`, but I got the following error:
```bash
Traceback (most recent call last):
File "C:\astro\load_ephemeris.py", line 19, in
eph = load…
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**Is your feature request related to a problem? Please describe.**
An object being risen does not necessarily mean it is visible enough for an observation. Its visibility actually heavily depends on …
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I noticed that a lot of packages have a fixed required version (although e.g. seaborn and skyfield have a min.version).
Especially the odd versioning of astropy I found odd. I don't have a good solut…
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The following is sample test code in **Python 2 with Skyfield 1.30**:
```
import datetime
from skyfield.api import load, utc
ts = load.timescale() # timescale object
PreviousNewMoon = datetim…
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Hi, I try to run the code from the skyfield documentation (Observing a Moon location) but with the tf, tpc and bpc files for the DE440.
The code with the files for DE421 as it is in the documentation…
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Have not analyzed big O performance but it is slow enough to be a nuisance for larger datasets, especially since this calculation needs to be repeated across train/test sets and perhaps even across fo…
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I have run across a discrepancy between 1.4.6 and 1.4.8 in satellite RA/Dec reported on a satellite-observer difference. Here is a example piece of code run and the result under the two versions.
…
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Is it possible to support the Zenith projection of MapPlot also in azimuth and altitude/zenith coordinates instead of RA/Dec?