PyRank
liberfa

pyerfa

Python bindings for ERFA routines
PyPI GitHub
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

pyerfa has 3.6M monthly downloads and 47 GitHub stars. Version 2.0.1.5 supports Python 3.9+, first published in 2020.

It is actively maintained under a permissive license, last released in Nov 2024.

It is built on top of numpy. It is used by 45 tracked packages, including astropy, sunpy and poliastro.

GitHub topics include astronomy, space and science.

Downloads
Day
111.3K
Week
720.7K
Month
3.6M
Stars
47
Forks
27
Issues
7
Version
2.0.1.5

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
38
Adoption
60
Community
70
Provenance
0
How the maintenance status was determined
Last commit
3 days ago
Monthly downloads
3,595,838
• Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
3,595,838
Stars
47
Stars per 1k downloads
0.01
Industry Standard
> 10,000,000 monthly downloads
• Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
102,963
Month daily avg
119,861
Momentum
-14.1%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
>=3.9
Cutting Edge
Minimum supported version is 3.12 or newer
• Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
BSD 3-Clause License
• Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
603 days ago
Total releases
15
Releases/year
2.5
Rapid
Last release within 365 days and > 12 releases/year
Regular
Last release within 365 days
• Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
33
Monthly downloads
3,595,838
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
• Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
57
 
Issue Burden
-
per 1k stars
Discussions
-
per 1k stars
Fork Ratio
122.2%
contrib / forks
Stale Release
599d
 
PR Velocity
Quiet
 

Weekly Downloads

GitHub Stars

Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 76.2K
Windows 2.0K
macOS 2.0K

Python Versions

3.11
41.5% 30.6K
3.13
21.7% 16.0K
3.12
21.5% 15.8K
3.10
10.9% 8.1K
3.14
4.3% 3.2K

Top Countries

1. US US
54.4K
2. SG SG
5.6K
3. IE IE
3.2K
4. HK HK
2.8K
5. CN CN
2.6K
6. GB GB
1.4K
7. JP JP
1.4K
8. DE DE
1.3K
9. CA CA
1.1K
10. NL NL
1.0K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
BSD 3-Clause License
First Release
May 31, 2020
Last Release
1 year ago
Last Commit
4 days ago
Latest Version
2.0.1.5
Total Releases
15
Contributors
33
Open PRs
1
Archived
No
Author
The PyERFA Developers
Python Versions
3
Wheels
cp310 cp311 cp36 cp37 cp38 cp39 pp39
Keywords
astronomy astrophysics cosmology space science coordinate
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links