Astronomia - Quick Guide
Astronomia is a collection of subroutines and applications for calculating the positions of the sun, moon, planets and other celestial objects. The emphasis is on high accuracy over a several thousand year time span. Note that the techniques used are overkill for most calendar applications.
The subroutine library attempts to implement some the techniques described in Astronomical Algorithms, second edition 1998, by Jean Meeus, Willmann-Bell, Inc.
Currently there are no graphical applications apart from some demo CGI interfaces.
Astronomia will work with Python 3.10+.
Documentation
Reference documentation is at http://timcera.bitbucket.io/.
Installation
At the command line:
$ pip install astronomia # OR $ conda install -c conda-forge astronomia
Usage
To use Astronomia in a project:
import astronomia
Development
Development is managed on bitbucket at https://bitbucket.org/timcera/astronomia/src/main/ and on github at https://github.com/timcera/astronomia
History
Astronomia is a fork of the Astrolabe library created by Bill McClain. The Astrolabe library is no longer available.
I (Tim Cera) used the Astrolabe library within my tidal analysis package TAPPy. In 2013 I pulled Astrolabe out of TAPPy and forked Astronomia. I have since fixed many bugs and added features. The most important added feature is the ability for most functions to work with array inputs. Bill McClain had dual Python and ‘C’ code, but I focused only on the Python code, updating with newer data and equations as I found them.
1 maintainer
Metadata
1 maintainer
Release files for astronomia 3.0.5
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | |
|---|---|---|---|---|
| astronomia-3.0.5.tar.gz | 697.4 kB | With provenance | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| astronomia-3.0.5-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 1.4 MB
Release files / astronomia-3.0.5.tar.gz
| Download URL | astronomia-3.0.5.tar.gz |
|---|---|
| Size | 697.4 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
c6bb28769848bb2f20b1eb92654c440b673dec69db90458386fdc9264840b990
|
|
BLAKE2b-256 checksum How to use checksums |
4681c4c1daa71cc40d50bc4e788ee962f0e5d81c0f55719ed22be03febc9730c
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jun 11, 2026.
Transparency logRelease files / astronomia-3.0.5-py3-none-any.whl
| Download URL | astronomia-3.0.5-py3-none-any.whl |
|---|---|
| Size | 677.0 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
b906e8f99544f3e9f4f1fbe1ef9ce745f66e07e8ce48dd237e5e0b2bd96610f6
|
|
BLAKE2b-256 checksum How to use checksums |
275aca3b062c69da835736e7af0f2396d0afbff7070bc90c796db5ccfcca6fae
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jun 11, 2026.
Transparency logSecurity for astronomia 3.0.5
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 2 files in this release have been uploaded with provenance metadata.
Attestation for astronomia-3.0.5.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jun 11, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
