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24 lines
1.1 KiB
Plaintext
24 lines
1.1 KiB
Plaintext
Skyfield (astro/py-skyfield) is a Python library for astronomical computations.
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It depends on various data files to accurately compute moon phases, planet
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positions, etc. Several issues are raised by these data files:
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- If they're not found in the path of the Loader, they're downloaded at
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runtime. Depending on the archive you're requesting, some files might be very
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large, causing a long delay (directly related to your network bandwidth). In
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the case of a web server app, you'd cause a timeout on client's end.
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- They come mainly from 2 sources: NASA's JPL, and the IERS. If one of them is
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temporarily unavailable, you couldn't perform any computation.
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- In some countries, or behind some filtering proxies, some hosts may be
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blocked.
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- These files have an expiration date (in a more or less distant future). As a
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consequence, even if the files are already downloaded in the right path, at
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each runtime you could possibly have to download one or more files before
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making any computation using them.
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This package provides at least the most common of these assets.
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WWW: https://github.com/brunobord/skyfield-data
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