Hubble Space Telescope (HST)
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About This Satellite
Launched by the Space Shuttle Discovery in 1990, the Hubble Space Telescope observes the universe in visible, ultraviolet, and near-infrared light from a 540 km orbit. Its sharp, unobstructed view has measured the expansion rate of the universe, imaged the first galaxies, and helped earn a Nobel Prize for the discovery of accelerating cosmic expansion.
Source: Wikipedia — Hubble Space Telescope (CC BY-SA 4.0)
Hubble Space Telescope (HST) is a cataloged satellite tracked under NORAD ID 20580 with international designator 90037B. According to the GCAT master catalog, it was built by LMSC, on the HST platform, with a launch mass of about 7547 kg, with a shape described as Step Cyl + 2 Pan. According to the TLE snapshot used when this page was generated (2026-08-18), its LEO orbit had an apogee of about 480 km and a perigee near 477 km, with an inclination of 28.47° and a period of roughly 94 minutes; at apogee its speed was about 7.63 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, Hubble Space Telescope (HST)'s apogee was 480 km, where its speed was about 7.63 km/s, completing about 15.3 orbits of Earth per day. Track it live on the map above or in the JOT orbital map.