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 (49 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)

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

TLE from 2 days ago

0 SL-12 R/B(2)
1 11571U 77092G   26171.39087632 -.00000075  00000-0  00000+0 0  9997
2 11571   3.5210 269.1124 0010070 185.6457  97.0675  1.01281917122983

Epoch: 2026-06-20T09:22Z

TLE epoch observation values (Epoch: 2026-06-20T09:22:51.714Z)

Latitude

-3.44298°

Longitude

142.64886°

Altitude

35,511.084 km

Speed

3.085 km/s

True Right ascension

12h 47m 52s

True Declination

-3° 26' 22"

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

02:17:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,549.024 km

Perigee altitude

35,464.668 km

Semi-major axis

41,884.983 km

Eccentricity

0.00101

Inclination

3.521°

RAAN

269.1124°

Arg. of periapsis

185.6457°

True anomaly

97.182°

Mean anomaly

97.0675°

Eccentric anomaly

97.12475°

Mean motion

0.2532 °/min

Orbital period

1,421.83 mins

BSTAR

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

EKRAN 2 DEB, 59986

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

EKRAN 2 DEB, 11581

SL-12 DEB, 10368 (Decayed)

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

EKRAN 2 DEB, 59988

SL-12 PLAT, 10367 (Decayed)

EKRAN 2 DEB, 59987

SL-12 R/B(1), 10366 (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: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T09:22:51.714Z)

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: 2 days ago