Key statistics
Satellite RADIO 3 at a glance.
Uptime
15914
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: 82.9591 deg
SMA: 7988.741 km
Apoapsis: 1656.35 km
Periapsis: 1564.863 km
RAAN: 93.5024 deg
Eccentricy: 0.005726
Argument of periapsis: 260.224 deg
Mean anomaly: 255.6869 deg
Mean motion: 12.158646 rev/day
Mean motion (dot): 0.00000029 rev/day2
B* drag term: 0.00020008 1/REarth
Two-line elements (TLE)
Creation date: July 11, 2025, 6:37 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 11, 2025, 3:38 a.m. UTC
TLE line 0: 0 RADIO 3
TLE line 1: 1 12997U 81120A 25192.15201196 .00000029 00000-0 20008-3 0 9998
TLE line 2: 2 12997 82.9591 93.5024 0057260 260.2240 255.6869 12.15864600933259
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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