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Runtime warning

See original GitHub issue

Hi, during the usage of skyfield 1.39 I get regular a runtime warning:

/Users/mw/PycharmProjects/Envs/mw4/lib/python3.8/site-packages/skyfield/functions.py:95: RuntimeWarning: invalid value encountered in double_scalars lon = arctan2(y, x) % tau

Does somebody has some hints where to look as it is am internal function and I use skyfield only from api level. Many thanks in advance, Michel

Issue Analytics

State:
Created 2 years ago
Comments:7 (3 by maintainers)

Top GitHub Comments

1reaction

mworioncommented, Nov 4, 2021

I’m working on that. Your idea checking the tEnd might have helped. We both observed a satellite problem:

From 04-Nov-21: 
https://orbit.ing-now.com/satellite/71914/2020-088bl/starlink-1914/ 

STARLINK-1914/2020-088BL Reentry 4 days ago!

So your chart showed the crash of one of these satellites.

0reactions

brandon-rhodescommented, Nov 4, 2021

I’m glad that we at least worked out why the search routine wasn’t working! The next time I’m in that code, I’ll try to remember the NaN position, and see whether the search routine maybe could fail with a more informative error message if it’s given NaN coordinates to work with.

In the meantime, I hope you have success getting your satellite routines armored against this failure mode!

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