← 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
Satellite and debris GP element sets, courtesy Dr. T.S. Kelso.
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.
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).
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.
Textures
Earth day, night, and cloud textures.
Milky Way panorama used as the star backdrop.
Earth normal/specular maps and the moon texture.
Software
SGP4/SDP4 orbital propagation and coordinate transforms.
Chakra Petch & Azeret MonoOFL — via Fontsource
Display and monospace typefaces.
PERIGEE
PERIGEE itself is open-source software, MIT
licensed © Andrew Malik.