This repository contains material under multiple licenses.
See the sections below for license information applicable to each
component.

This mod contains original code and content created by David Krug. Unless otherwise noted, original code and content are licensed under
the terms described in LICENSE.

Third-party components:

1. skycultures/

The contents of the skycultures directory are derived from data obtained
from Stellarium.
URL: https://stellarium.org/

The contents of skycultures/ have been modified from the original
distribution. All files except "constellationship.fab" and "constellation_names.eng.fab" were removed.

The contents of skycultures/ are derived from Stellarium and are
distributed under the terms of GPL-2.0.
See LICENSES/GPL-2.0.txt for the full license text.

Copyright © the respective Stellarium contributors.

2. catalogs/oms_catalog.csv

The compiled OMS catalog is a modified and supplemented AT-HYG 4.0 catalog
from the HYG Star Database (David Nash).
URL: https://astronexus.com/projects/at-hyg

This file is licensed under CC BY-SA 4.0.
https://creativecommons.org/licenses/by-sa/4.0/
See LICENSES/CC_BY-SA_4.0.txt for the full license text.

Copyright © David Nash.

Original nonempty AT-HYG fields are preserved; additional identifiers and
individual-star candidates use the Washington Double Star Catalog maintained
at the U.S. Naval Observatory. Supported ORB6 matches supply additional
component classifications. Sources, hashes, attribution and limitations are
documented in catalogs/attributions.md and catalogs/oms_catalog_readme.md.
Input hashes and construction details remain in the source repository's
catalogs/build-manifest.json and catalogs/README.md.
The older reduced AT-HYG 3.2 CSV remains historical repository material but
is not included in the mod build.

3. lines_in_20.txt

The files lines_in_20.txt is from Constellation Boundaries (Pierre Barbier)
URL: https://pbarbier.com/constellations/boundaries.html
See LICENSES/CC_BY-SA_4.0.txt for the full license text.

This file is licensed under CC BY-SA 4.0.
https://creativecommons.org/licenses/by-sa/4.0/

Copyright © Pierre Barbier.

The file lines_in_20.txt is distributed without modification.

4. catalogs/orb6orbits.txt and catalogs/orb6format.txt

Sixth Catalog of Orbits of Visual Binary Stars (ORB6).
Rachel A. Matson, Stephen J. Williams, William I. Hartkopf and Brian D. Mason,
U.S. Naval Observatory.
URL: https://www.astro.gsu.edu/wds/orb6.html
Citation: Hartkopf, Mason and Worley (2001), Sixth Catalog of Orbits of
Visual Binary Stars, and the individual orbit references in the catalog.

This research has made use of the Washington Double Star Catalog maintained
at the U.S. Naval Observatory.

The downloaded orbital-elements and format files are retained unmodified.
Oh My Stars derives apparent relative orbit curves from supported records.
Snapshot URLs, retrieval date and hashes are in catalogs/orb6-source.json;
interpretation and limitations are documented in catalogs/oms_catalog_readme.md
and the supplied catalogs/orb6format.txt.
No standalone redistribution license was identified on the inspected source
pages. Confirm applicable terms before public distribution; the mod and
AT-HYG licenses do not relicense these third-party data.
