ESSA 3 (TOS-A)
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About This Satellite
ESSA 3 (TOS-A) is a cataloged satellite tracked under NORAD ID 2435 with international designator 66087A. According to the GCAT master catalog, it was built by RCA, on the Tiros I platform, with a launch mass of about 148 kg, with a shape described as Cyl. According to the TLE snapshot used when this page was generated (2026-08-18), its LEO orbit had an apogee of about 1.493 km and a perigee near 1.393 km, with an inclination of 101.07° and a period of roughly 114.6 minutes; at apogee its speed was about 7.10 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, ESSA 3 (TOS-A)'s apogee was 1.493 km, where its speed was about 7.10 km/s, completing about 12.6 orbits of Earth per day. Track it live on the map above or in the JOT orbital map.