SL-12 R/B(2), 11571

Orbit data source: Space-Track

SL-12 R/B(2), 11571 is space debris in GEO originally from a launch on Tue, 20 Sep 1977 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/11571?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

11571, 1977-092G

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)

1977-09-20 (48 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

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Last TLE update: 9 hours ago

TLE from 9 hours ago

0 SL-12 R/B(2)
1 11571U 77092G   25307.68516446  .00000085  00000-0  00000+0 0  9999
2 11571   4.1087 272.8727 0009209 184.2343 220.6651  1.01284753120676

Epoch: 2025-11-03T16:26Z

TLE epoch observation values (Epoch: 2025-11-03T16:26:38.209Z)

Latitude

2.92077°

Longitude

27.74191°

Altitude

35,533.266 km

Speed

3.083 km/s

True Right ascension

21h 10m 20s

True Declination

2° 55' 04"

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

21:04:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,544.633 km

Perigee altitude

35,467.491 km

Semi-major axis

41,884.199 km

Eccentricity

0.00092

Inclination

4.1087°

RAAN

272.8727°

Arg. of periapsis

184.2343°

True anomaly

220.59639°

Mean anomaly

220.6651°

Eccentric anomaly

220.63074°

Mean motion

0.2532 °/min

Orbital period

1,421.79 mins

BSTAR

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Other satellites on launch #92 in the year 1977 (1977-09-20 UTC)

SL-12 R/B(AUX MOTOR), 10484 (Decayed)

EKRAN 2 DEB, 33519

SL-12 R/B(1), 10366 (Decayed)

SL-12 PLAT, 10367 (Decayed)

SL-12 R/B(AUX MOTOR), 10408 (Decayed)

EKRAN 2 DEB, 29014

SL-12 DEB, 10368 (Decayed)

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SL-12 R/B(2) Visibility

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11571 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), 11571 on other resources

View SL-12 R/B(2), 11571 on Heavens-Above

View SL-12 R/B(2), 11571 on Keep Track

View SL-12 R/B(2), 11571 on Celestrak

View SL-12 R/B(2), 11571 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), 11571

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2025-11-03T16:26:38.209Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #92 in the year 1977 (1977-09-20 UTC)

SL-12 R/B(2) Visibility

11571 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 11571 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 9 hours ago