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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/20502?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

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

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

20502, 1990-016D

Orbit

GEO

Last TLE update

15 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 15 hours ago

0 SL-12 R/B(2)
1 20502U 90016D   25133.63933963  .00000081  00000-0  00000-0 0  9990
2 20502  12.8719 337.9649 0040344 233.5037 118.0303  1.00016944128763

Epoch: 2025-05-13T15:20Z

Definitive object data (Epoch: 2025-05-13T15:20:38.944Z)

Latitude

-1.77816°

Longitude

-131.6943°

Altitude

35,938.399 km

Speed

3.066 km/s

True Right ascension

22h 00m 24s

True Declination

-1° 46' 35"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-7.17124°

Longitude

89.45998°

Altitude

35,697.839 km

Speed

3.084 km/s

Apparent Right ascension

12h 30m 42s

Apparent Declination

-13° 56' 52"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:39:19

Azimuth

215.956° SW

Elevation

28.393°

Doppler factor

Orbital elements

Apogee altitude

36,029.581 km

Perigee altitude

35,688.777 km

Semi-major axis

42,237.316 km

Eccentricity

0.0040344

Inclination

12.8719°

RAAN

337.9649°

Arg. of periapsis

233.5037°

True anomaly

118.43741°

Mean anomaly

118.0303°

Eccentric anomaly

118.23395°

Mean motion

0.25003 °/min

BSTAR

Unknown

Orbital period

1439.81 mins

Loading historical data...

20502 neighbors

Authenticating...

Loading maneuver chart data...

Loading SW <> Apogee altitude chart data...

Loading historical data...

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 forecast

Observer location: undefined°, undefined°

Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
1440 mins	2025-05-14 06:10:49.606Z	215.946° SW	2025-05-14 22:10:49.606Z	230.907° WSW	36.277°	2025-05-15 06:10:49.606Z	216.939° SW

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in ascending order

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.