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.

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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 (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: 1 day ago

TLE from 1 day ago

0 SL-12 R/B(2)
1 20266U 89081D   25259.34165486  .00000043  00000-0  00000-0 0  9999
2 20266  12.1873 334.7203 0026630 123.4181 239.6310  1.00611891116604

Epoch: 2025-09-16T08:11Z

TLE epoch observation values (Epoch: 2025-09-16T08:11:58.979Z)

Latitude

0.58171°

Longitude

-141.08871°

Altitude

35,747.955 km

Speed

3.074 km/s

True Right ascension

22h 29m 45s

True Declination

0° 34' 52"

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

11:45:59

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,804.556 km

Perigee altitude

35,580.488 km

Semi-major axis

42,070.659 km

Eccentricity

0.00266

Inclination

12.1873°

RAAN

334.7203°

Arg. of periapsis

123.4181°

True anomaly

239.36816°

Mean anomaly

239.631°

Eccentric anomaly

239.49953°

Mean motion

0.25152 °/min

Orbital period

1,431.29 mins

BSTAR

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Computing Atmospheric mass density...

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

GORIZONT 19, 20263

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

SL-12 PLAT, 20265 (Decayed)

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

SL-12 R/B(AUX MOTOR), 20271 (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	2025-09-17 18:58:37.119Z	227.623° WSW	2025-09-18 14:07:37.119Z	235.399° WSW	34.553°	2025-09-18 18:58:37.119Z	225.951° WSW

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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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2025-09-16T08:11:58.979Z)

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 forecast

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: 1 day ago