SL-12 R/B(2), 21019

Orbit data source: Space-Track

SL-12 R/B(2), 21019 is space debris in GEO originally from a launch on Thu, 20 Dec 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.

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Iframe URL

https://www.satcat.com/sats-embedded/21019?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21019, 1990-112D

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)

1990-12-20 (35 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)

Expand to show TLE details & history
Last TLE update: 18 hours ago

TLE from 18 hours ago

0 SL-12 R/B(2)
1 21019U 90112D   26090.57070247 -.00000034  00000-0  00000-0 0  9993
2 21019  12.9655 338.6237 0024636 182.0027 120.5597  1.00012772119152

Epoch: 2026-03-31T13:41Z

TLE epoch observation values (Epoch: 2026-03-31T13:41:48.693Z)

Latitude

-10.86338°

Longitude

-112.26823°

Altitude

35,914.022 km

Speed

3.068 km/s

True Right ascension

18h 48m 31s

True Declination

-10° 51' 10"

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

13:07:41

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,964.411 km

Perigee altitude

35,756.294 km

Semi-major axis

42,238.489 km

Eccentricity

0.00246

Inclination

12.9655°

RAAN

338.6237°

Arg. of periapsis

182.0027°

True anomaly

120.80241°

Mean anomaly

120.5597°

Eccentric anomaly

120.6811°

Mean motion

0.25002 °/min

Orbital period

1,439.87 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #112 in the year 1990 (1990-12-20 UTC)

RADUGA 26, 21016

SL-12 PLAT, 21018 (Decayed)

SL-12 R/B(AUX MOTOR), 21024 (Decayed)

SL-12 R/B(1), 21017 (Decayed)

SL-12 R/B(AUX MOTOR), 21025 (Decayed)

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SL-12 R/B(2) Visibility forecast

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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	2026-04-01 07:29:27.025Z	192.619° SSW	2026-04-01 23:41:27.025Z	200.114° SSW	39.994°	2026-04-02 07:29:27.025Z	193.866° SSW

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21019 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), 21019 on other resources

View SL-12 R/B(2), 21019 on Heavens-Above

View SL-12 R/B(2), 21019 on Keep Track

View SL-12 R/B(2), 21019 on Celestrak

View SL-12 R/B(2), 21019 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), 21019

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-03-31T13:41:48.693Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #112 in the year 1990 (1990-12-20 UTC)

SL-12 R/B(2) Visibility forecast

21019 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 21019 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 18 hours ago