SL-12 R/B(2), 20502

Orbit data source: Space-Track

SL-12 R/B(2), 20502 is space debris in GEO originally from a launch on Thu, 15 Feb 1990 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.

Not visible in the next 10 days

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Iframe URL

https://www.satcat.com/sats-embedded/20502?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20502, 1990-016D

Orbit

GEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

NPO Energiya

Mission

Spacecraft

Bus & Motor

BLOK DM, Unknown motor

Mass

2,440 kg wet, 2,440 kg dry

Launch date (UTC)

1990-02-15 (36 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 3.1 m

Radar Cross Section

23.597 m², Large (>1 m²)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 SL-12 R/B(2)
1 20502U 90016D   25260.60736115 -.00000377  00000-0  00000-0 0  9997
2 20502  12.7429 337.0585 0042325 236.6006 120.1107  1.00024899130038

Epoch: 2025-09-17T14:34Z

TLE epoch observation values (Epoch: 2025-09-17T14:34:36.003Z)

Latitude

-0.64015°

Longitude

118.82263°

Altitude

35,946.556 km

Speed

3.066 km/s

True Right ascension

22h 17m 00s

True Declination

0° 38' 22"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

17:26:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

36,035.701 km

Perigee altitude

35,678.181 km

Semi-major axis

42,235.078 km

Eccentricity

0.00423

Inclination

12.7429°

RAAN

337.0585°

Arg. of periapsis

236.6006°

True anomaly

120.52915°

Mean anomaly

120.1107°

Eccentric anomaly

120.32003°

Mean motion

0.25005 °/min

Orbital period

1,439.69 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #16 in the year 1990 (1990-02-15 UTC)

RADUGA 25, 20499

SL-12 R/B(1), 20500 (Decayed)

SL-12 PLAT, 20501 (Decayed)

SL-12 R/B(AUX MOTOR), 20506 (Decayed)

SL-12 R/B(AUX MOTOR), 20507 (Decayed)

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SL-12 R/B(2) Visibility

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20502 neighbors

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out SL-12 R/B(2), 20502 on other resources

View SL-12 R/B(2), 20502 on Heavens-Above

View SL-12 R/B(2), 20502 on Keep Track

View SL-12 R/B(2), 20502 on Celestrak

View SL-12 R/B(2), 20502 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

SL-12 R/B(2), 20502

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2025-09-17T14:34:36.003Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #16 in the year 1990 (1990-02-15 UTC)

SL-12 R/B(2) Visibility

20502 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 20502 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago