VANGUARD 2
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About This Satellite
VANGUARD 2 is a cataloged satellite tracked under NORAD ID 11 with international designator 59001A. According to the GCAT master catalog, it was built by NRL, on the NRL 20" platform, with a launch mass of about 10 kg, with a shape described as Sphere. According to the TLE snapshot used when this page was generated (2026-08-18), its MEO orbit had an apogee of about 2.901 km and a perigee near 559 km, with an inclination of 32.86° and a period of roughly 120.9 minutes; at apogee its speed was about 6.06 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, VANGUARD 2's apogee was 2.901 km, where its speed was about 6.06 km/s, completing about 11.9 orbits of Earth per day. Track it live on the map above or in the JOT orbital map.