Key statistics
Satellite SOYUZ 2.1B R/B at a glance.
Uptime
11
Days in orbit
Revolutions
≈ 16.5
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
96.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for SOYUZ 2.1B R/B.
Object identification
Identified? True
Debris? False
Object name: SOYUZ 2.1B R/B
International designator: 2025-181B
Object number (NORAD): 65266
Object ID (CCSDS): 65266
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Decay date: Aug. 31, 2025
Period: 87.454 minutes
Inclination: 96.9316 deg
SMA: 6526.472 km
Apoapsis: 162.357 km
Periapsis: 134.317 km
RAAN: 311.6082 deg
Eccentricy: 0.00214812
Argument of periapsis: 6.7566 deg
Mean anomaly: 353.4023 deg
Mean motion: 16.46588403 rev/day
Mean motion (dot): 0.10406097 rev/day2
B* drag term: 0.00016263402 1/REarth
Two-line elements (TLE)
Creation date: Aug. 31, 2025, 11:35 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 31, 2025, 4:20 a.m. UTC
TLE line 0: 0 SOYUZ 2.1B R/B
TLE line 1: 1 65266U 25181B 25243.18111148 .10406097 23687-5 16263-3 0 9992
TLE line 2: 2 65266 96.9316 311.6082 0021481 6.7566 353.4023 16.46588403 1699
Live tracking on map
Satellite SOYUZ 2.1B R/B has decayed and is no longer in orbit. No tracking available.
In-orbit conjunctions
Satellite SOYUZ 2.1B R/B has decayed and is no longer in orbit. No conjunctions available.
Associated space launch
Bion-M is the next generation of Russian biological research satellites. While retaining the Vostok/Zenit-derived reentry module of the earlier Bion, the propulsion module has been replace by a Yantar type module, which provides maneuvering capabilities and longer mission support. The mission duration has been increased to up to 6 months by using solar cells for energy generation. The weight of scientific equipment has been increased by 100 kilograms.
SOYUZ 2.1B R/B was lifted into orbit during the mission ‘Soyuz 2.1b | Bion-M No. 2’, on board a Soyuz 2.1b space rocket.
The launch took place on Aug. 20, 2025, 5:13 p.m. from 31/6.
For more information about the launch, click the button.
Soyuz 2.1b | Bion-M No. 2
Agency: N/A
Status: Launch Successful
Launch date: Aug. 20, 2025, 5:13 p.m. UTC
Rocket: Soyuz 2.1b
Launch pad: 31/6
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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