SL-12 R/B(2), 20266

Orbit data source: Space-Track

SL-12 R/B(2), 20266 is space debris in GEO originally from a launch on Thu, 28 Sep 1989 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/20266?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20266, 1989-081D

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)

1989-09-28 (37 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 3.6 m

Radar Cross Section

23.597 m², Large (>1 m²)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 SL-12 R/B(2)
1 20266U 89081D   26307.32508558  .00000014  00000-0  00000-0 0  9991
2 20266  11.7291 331.9474 0025095 130.4864  56.3278  1.00599167120751

Epoch: 2026-11-03T07:48Z

TLE epoch observation values (Epoch: 2026-11-03T07:48:07.394Z)

Latitude

-1.44208°

Longitude

-0.77235°

Altitude

35,636.871 km

Speed

3.082 km/s

True Right ascension

10h 35m 23s

True Declination

-1° 26' 26"

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

21:38:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,801.66 km

Perigee altitude

35,590.489 km

Semi-major axis

42,074.212 km

Eccentricity

0.00251

Inclination

11.7291°

RAAN

331.9474°

Arg. of periapsis

130.4864°

True anomaly

56.56754°

Mean anomaly

56.3278°

Eccentric anomaly

56.44763°

Mean motion

0.25149 °/min

Orbital period

1,431.47 mins

BSTAR

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Other satellites on launch #81 in the year 1989 (1989-09-28 UTC)

SL-12 R/B(AUX MOTOR), 20270 (Decayed)

SL-12 R/B(1), 20264 (Decayed)

SL-12 R/B(AUX MOTOR), 20271 (Decayed)

GORIZONT 19, 20263

SL-12 PLAT, 20265 (Decayed)

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SL-12 R/B(2) Visibility

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20266 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), 20266 on other resources

View SL-12 R/B(2), 20266 on Heavens-Above

View SL-12 R/B(2), 20266 on Keep Track

View SL-12 R/B(2), 20266 on Celestrak

View SL-12 R/B(2), 20266 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), 20266

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-11-03T07:48:07.394Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #81 in the year 1989 (1989-09-28 UTC)

SL-12 R/B(2) Visibility

20266 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 20266 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago