LowEarth

UMKA 1 (RS40S)

NORAD 57172· COSPAR 2023-091G· Active satellite· Amateur Radio· SSO
Launch
Launched on Jun 27, 2023 from Cosmodrome Site 1S, Russia aboard a Soyuz 2.1b Fregat-M.
Soyuz 2.1b/Fregat-M | Meteor-M No.2-3 & others
Live · TLE epoch 2026-09-08 21:28 UTC
Orbit class
SSO — Sun-Synchronous (LEO at 96–102° inclination)
Operator
Russian / Soviet Government
Country
Russia
Manufacturer
Launched
Jun 27, 2023
Mass
Apogee
514 km
Perigee
496 km
Inclination
97.50°
Period
1.58 h

Altitude history

Apogee and perigee for UMKA 1 (RS40S) across 103 days of archived orbital elements (104 element sets, one per day).

Trend
Decaying
Change
-3.2 km
Rate
-0.03 km/day
Now
496 × 514 km
507517496May 29Sep 9
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

38 other catalogued objects still in orbit from launch 2023-091 (Soyuz 2.1b/Fregat-M | Meteor-M No.2-3 & others).

…and 14 more from this launch.

Sources & further reading

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