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RADUGA 21, 18631

Orbit data source: Space-Track

RADUGA 21, 18631 is a payload satellite owned by UNKS (CIS) in GEO that was launched on Thu, 10 Dec 1987 UTC via a PROTON-K/DM-2 launch vehicle from the Tyuratam Missile And Space Complex (TTMTR). Payloads include a variety of satellites, spacecraft, and rockets equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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RADUGA 21 details

Identifier	18631, 1987-100A
Orbit	GEO
Last TLE update	1 day ago
Origin	UNKS (CIS)
Manufacturer	NPO PM
Mission	Non-operational Defense Communications
Bus & Motor	RADUGA, Unknown motor
Mass	1,965 kg wet, ~1,800 kg dry
Launch date (UTC)	1987-12-10 (37 years ago)
Launch vehicle	PROTON-K/DM-2
Launch site	Tyuratam Missile And Space Complex (TTMTR)
Object type	Payload Rocket body Debris
Shape & HBR	Cyl + 2 Pan, 9.5 m
Radar Cross Section	16.975 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 1 day ago

0 RADUGA 21
1 18631U 87100A   24325.05961521 -.00000086  00000-0  00000-0 0  9995
2 18631  12.1312 329.3816 0002419 205.5653 159.2232  1.00182387135334

Epoch: 2024-11-20T01:25Z

Definitive object data (Epoch: 2024-11-20T01:25:50.754Z)

Latitude	1.01622°
Longitude	-106.96458°
Altitude	35,820.586 km
Speed	3.073 km/s
True Right ascension	22h 16m 13s
True Declination	1° 00' 55"
Sunlit	Object was in daylight at TLE epoch

Visualization TLE readout

Latitude	11.98665°
Longitude	-31.18804°
Altitude	35,816.403 km
Speed	3.073 km/s
Apparent Right ascension	03h 18m 03s
Apparent Declination	7° 20' 08"
Sunlit	Object is in daylight

Visualization observer readout

Local Sidereal Time	03:28:48
Azimuth	184.939° SSW
Elevation	57.331°
Doppler factor	1

Orbital elements

Apogee altitude	35,822.882 km
Perigee altitude	35,802.47 km
Semi-major axis	42,190.813 km
Eccentricity	0.0002419
Inclination	12.1312°
RAAN	329.3816°
Arg. of periapsis	205.5653°
True anomaly	159.23303°
Mean anomaly	159.2232°
Eccentric anomaly	159.22812°
Mean motion	0.25045 °/min
BSTAR	Unknown
Orbital period	1437.43 mins