Key statistics
Satellite RADIO 3 at a glance.
Uptime
16029
Days in orbit
Revolutions
≈ 12.2
Per day
Orbit
LEO
Low Earth Orbit
Inclination
83.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for RADIO 3.
Object identification
Identified? True
Debris? False
Object name: RADIO 3
International designator: 1981-120A
Object number (NORAD): 12997
Object ID (CCSDS): 12997
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 118.434 minutes
Inclination: 82.9648 deg
SMA: 7988.731 km
Apoapsis: 1657.155 km
Periapsis: 1564.037 km
RAAN: 28.8379 deg
Eccentricy: 0.0058281
Argument of periapsis: 16.9797 deg
Mean anomaly: 136.6808 deg
Mean motion: 12.15866901 rev/day
Mean motion (dot): -0.00000002 rev/day2
B* drag term: -0.00011716 1/REarth
Two-line elements (TLE)
Creation date: Nov. 4, 2025, 11:56 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Nov. 4, 2025, 4:01 p.m. UTC
TLE line 0: 0 RADIO 3
TLE line 1: 1 12997U 81120A 25308.66747250 -.00000002 00000-0 -11716-3 0 9998
TLE line 2: 2 12997 82.9648 28.8379 0058281 16.9797 136.6808 12.15866901947413
Live tracking on map
Real-time ground track for satellite RADIO 3.
Associated space launch
6 Soviet amateur radio satellites
RADIO 3 was lifted into orbit during the mission ‘Kosmos-3M | Radio Sputnik 3 to 8’, on board a Kosmos-3M space rocket.
The launch took place on Dec. 17, 1981, 11 a.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Radio Sputnik 3 to 8
Agency: N/A
Status: Launch Successful
Launch date: Dec. 17, 1981, 11 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
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