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

Iframe embed code

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Iframe URL

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

Optional Secondary NORAD IDs

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ISO8601 Format

Identifier

20502, 1990-016D

Orbit

GEO

Last TLE update

18 hours ago

Origin

Russian Strategic Rocket Forces (CIS)

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 (35 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 6.27 m

Radar Cross Section

23.597 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 18 hours ago

0 SL-12 R/B(2)
1 20502U 90016D   25191.63403331 -.00000025  00000-0  00000-0 0  9994
2 20502  12.8120 337.5519 0041214 234.4151 121.8801  1.00039451129343

Epoch: 2025-07-10T15:13Z

TLE epoch observation values (Epoch: 2025-07-10T15:13:00.478Z)

Latitude

-0.74554°

Longitude

177.26647°

Altitude

35,942.969 km

Speed

3.066 km/s

True Right ascension

22h 17m 15s

True Declination

0° 44' 41"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-12.75905°

Longitude

84.15901°

Altitude

35,702.695 km

Speed

3.083 km/s

Apparent Right ascension

15h 37m 30s

Apparent Declination

-18° 18' 27"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

21:19:24

Azimuth

253.022° W

Elevation

-8.288°

Doppler factor

Orbital elements

Apogee altitude

36,026.895 km

Perigee altitude

35,678.794 km

Semi-major axis

42,230.982 km

Eccentricity

0.00412

Inclination

12.812°

RAAN

337.5519°

Arg. of periapsis

234.4151°

True anomaly

Unknown

Mean anomaly

121.8801°

Eccentric anomaly

Unknown

Mean motion

0.25009 °/min

Orbital period

1,439.48 mins

BSTAR

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20502 neighbors

Authenticating...

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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)

SL-12 R/B(2) Visibility

Observer location: undefined°, undefined°

SL-12 R/B(2) is likely not visible in the next few days

Authenticating...

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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

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