I am given a list of dates in UTC, all hours cast to 00:00. I'd like to determine if a (lunar) eclipse occurred in a given day (ie past 24 hours) Considering the python snippet from sykfield.api im...

The JulianDate object in Skyfield is a handy way to quickly produce and hold a set of time values in Julian Days, and pass them to Skyfield's at() method to calculate astronomical positions in vari...

scipy.optimize.minimize using default method is returning the initial value as the result, without any error or warning messages. While using the Nelder-Mead method as suggested by this answer solv...

UPDATE: Skyfield has just had a significant revision, including expanded documentation and a method for angular separation - see the accepted answer. I'm calculating the apparent angular separatio...

In the time tests shown below, I found that Skyfield takes several hundred microseconds up to a millisecond to return obj.at(jd).position.km for a single time value in jd, but the incremental cost ...

Mapping the distance from the center of the earth to various (lat, lon) positions using Skyfield shows variation with latitude but independent of longitude (sub-millimeter). This may be a documente...

I'm trying to use Skyfield to plot the distance in au from Earth to solar system planets as a function of time. This is super simple and is even given in the front page of the package homepage. How...