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Credits & Attribution

Data sources, libraries, and assets used by PERIGEE

PERIGEE is built entirely on public data and open-source software. Every feed, library, and texture it uses is credited below with a link and license.

Data sources

CelesTrakGP orbital elements
Satellite and debris GP element sets, courtesy Dr. T.S. Kelso.
NASA / JPL — CNEOS, Sentry & CADclose approaches · impact risk · fireballs
Close-approach data (CAD), Sentry impact-risk objects, and CNEOS atmospheric fireball events.
This app uses publicly available NASA/JPL data; it is not endorsed by NASA or JPL.
Global Meteor NetworkCC BY 4.0 — meteor trajectories
Daily camera-triangulated meteor trajectory summaries from GMN's worldwide station network, licensed CC BY 4.0. Data: Global Meteor Network (CC BY 4.0).
The Meteoritical Society — Meteoritical Bulletin Databasevia NASA Open Data — recovered meteorites
Recovered meteorite landings (name, class, mass, year, recovery coordinates) from the Meteoritical Society catalog, distributed through NASA's open-data portal. Witnessed falls plus the heaviest finds are plotted; "found" coordinates mark recovery sites, which can be far from the fall point.
This app uses publicly available NASA data; it is not endorsed by NASA.
Daily true-color VIIRS mosaics for the live Earth basemap — imagery courtesy NASA EOSDIS.
Upcoming and previous rocket launch data.
OpenStreetMap / NominatimODbL — geocoding
Place-name search © OpenStreetMap contributors, available under the Open Database License (ODbL).

Textures

Earth day, night, and cloud textures.
Milky Way panorama used as the star backdrop.
Earth normal/specular maps and the moon texture.

Software

WebGL rendering.
SGP4/SDP4 orbital propagation and coordinate transforms.
Interface icons.
Chakra Petch & Azeret MonoOFL — via Fontsource
Display and monospace typefaces.

PERIGEE

PERIGEE itself is open-source software, MIT licensed © Andrew Malik.