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: 11 hours ago

TLE from 11 hours ago

0 SL-12 R/B(2)
1 20502U 90016D   25307.63128692 -.00000042  00000-0  00000+0 0  9995
2 20502  12.6948 336.7406 0042455 239.1773 129.1452  1.00008723130517

Epoch: 2025-11-03T15:09Z

TLE epoch observation values (Epoch: 2025-11-03T15:09:03.189Z)

Latitude

1.91422°

Longitude

74.80957°

Altitude

35,974.035 km

Speed

3.064 km/s

True Right ascension

23h 00m 48s

True Declination

1° 54' 44"

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

22:00:45

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

36,040.824 km

Perigee altitude

35,682.167 km

Semi-major axis

42,239.632 km

Eccentricity

0.00425

Inclination

12.6948°

RAAN

336.7406°

Arg. of periapsis

239.1773°

True anomaly

129.52124°

Mean anomaly

129.1452°

Eccentric anomaly

129.33335°

Mean motion

0.25001 °/min

Orbital period

1,439.92 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 R/B(AUX MOTOR), 20506 (Decayed)

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

SL-12 PLAT, 20501 (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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2025-11-03T15:09:03.189Z)

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: 11 hours ago