Key statistics
Satellite INFORMATOR 1 at a glance.
Uptime
12640
Days in orbit
Revolutions
≈ 13.8
Per day
Orbit
LEO
Low Earth Orbit
Inclination
82.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for INFORMATOR 1.
Object identification
Identified? True
Debris? False
Object name: INFORMATOR 1
International designator: 1991-006A
Object number (NORAD): 21087
Object ID (CCSDS): 21087
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.69 minutes
Inclination: 82.9475 deg
SMA: 7358.06 km
Apoapsis: 1004.956 km
Periapsis: 954.895 km
RAAN: 335.2411 deg
Eccentricy: 0.00340179
Argument of periapsis: 308.5155 deg
Mean anomaly: 174.743 deg
Mean motion: 13.75490936 rev/day
Mean motion (dot): 0.00000082 rev/day2
B* drag term: 0.000069190478 1/REarth
Two-line elements (TLE)
Creation date: Sept. 7, 2025, 3:09 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 6, 2025, 7:17 p.m. UTC
TLE line 0: 0 INFORMATOR 1
TLE line 1: 1 21087U 91006A 25249.80356593 .00000082 00000-0 69190-4 0 9994
TLE line 2: 2 21087 82.9475 335.2411 0034018 308.5155 174.7430 13.75490936736589
Live tracking on map
Real-time ground track for satellite INFORMATOR 1.
In-orbit conjunctions
A list of the most updated potential collisions computed for object INFORMATOR 1.
Associated space launch
Informator 1 was a prototype communications satellite for the Koskon (Space Conversion) Global Space Communication System to collect and transmit data from several scientific stations with an additional radio amateur hosted payload. It was launched on 29 January 1991 from the Plesetsk Cosmodrome by a Kosmos-3M launch vehicle.
INFORMATOR 1 was lifted into orbit during the mission ‘Kosmos-3M | Informator-1’, on board a Kosmos-3M space rocket.
The launch took place on Jan. 29, 1991, 11:59 a.m. from 133/3 (133L).
For more information about the launch, click the button.
Kosmos-3M | Informator-1
Agency: N/A
Status: Launch Successful
Launch date: Jan. 29, 1991, 11:59 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 133/3 (133L)
Location: Plesetsk Cosmodrome, Russian Federation
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