ASCENT

NORAD 51287· COSPAR 2021-118E· Active satellite· Other / Unclassified· GEO

Launch

Launched on Dec 7, 2021 from Space Launch Complex 41, United States of America aboard a Atlas V 551.

Atlas V 551 | STP-3 →

Live · TLE epoch 2026-08-31 09:34 UTC

Orbit class

GEO — Geostationary (~35,786 km, equatorial)

Operator

United States Government

Country

United States

Manufacturer

—

Launched

Dec 7, 2021

Mass

—

Apogee

35,562 km

Perigee

35,495 km

Inclination

4.36°

Period

23.71 h

Altitude history

Apogee and perigee for ASCENT across 14 days of archived orbital elements (15 element sets, one per day).

Trend

Stable

Change

+0.7 km

Rate

+0.05 km/day

Now

35495 × 35562 km

Apogee Perigee

Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.

Launched with

One other catalogued object still in orbit from launch 2021-118 (Atlas V 551 | STP-3).

STPSAT-6 · 49817

Sources & further reading

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