Key statistics
Satellite RADIO 3 at a glance.
Uptime
15974
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: 82.9564 deg
SMA: 7988.735 km
Apoapsis: 1657.774 km
Periapsis: 1563.426 km
RAAN: 59.2448 deg
Eccentricy: 0.0059051
Argument of periapsis: 130.2715 deg
Mean anomaly: 348.5232 deg
Mean motion: 12.15866042 rev/day
Mean motion (dot): 0.00000022 rev/day2
B* drag term: 0.00012602216 1/REarth
Two-line elements (TLE)
Creation date: Sept. 11, 2025, 3:57 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 10, 2025, 8:34 p.m. UTC
TLE line 0: 0 RADIO 3
TLE line 1: 1 12997U 81120A 25253.85752637 .00000022 00000-0 12602-3 0 9998
TLE line 2: 2 12997 82.9564 59.2448 0059051 130.2715 348.5232 12.15866042940752
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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