GREB
Live Position
Ground Track · Last 90 Minutes
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About This Satellite
GREB is a cataloged satellite tracked under NORAD ID 731 with international designator 64001E. According to the GCAT master catalog, it was built by NRL, on the NRL 20" platform, with a launch mass of about 29 kg, with a shape described as Sphere. According to the TLE snapshot used when this page was generated (2026-08-18), its LEO orbit had an apogee of about 925 km and a perigee near 902 km, with an inclination of 69.91° and a period of roughly 103.1 minutes; at apogee its speed was about 7.39 km/s. Positions on this page are near-real-time SGP4 predictions propagated from the latest two-line element (TLE) data.
In the TLE snapshot used to generate this page, GREB's apogee was 925 km, where its speed was about 7.39 km/s, completing about 14.0 orbits of Earth per day. Track it live on the map above or in the JOT orbital map.