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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.

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<iframe src="https://www.satcat.com/sats-embedded/11571?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/11571?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

11571, 1977-092G

Orbit

GEO

Last TLE update

15 hours ago

Origin

Russian Strategic Rocket Forces (CIS)

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

Cyl, 6.27 m

Radar Cross Section

23.597 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 15 hours ago

0 SL-12 R/B(2)
1 11571U 77092G   25187.48277713 -.00000157  00000-0  00000-0 0  9996
2 11571   4.4133 274.7006 0010812 178.3491 315.0313  1.01284223119452

Epoch: 2025-07-06T11:35Z

TLE epoch observation values (Epoch: 2025-07-06T11:35:11.944Z)

Latitude

3.23058°

Longitude

-50.43154°

Altitude

35,472.144 km

Speed

3.087 km/s

True Right ascension

03h 12m 17s

True Declination

3° 13' 38"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

0.32314°

Longitude

-179.31109°

Altitude

35,549.899 km

Speed

3.082 km/s

Apparent Right ascension

19h 00m 40s

Apparent Declination

-5° 32' 56"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:48:53

Azimuth

112.362° ESE

Elevation

16.57°

Doppler factor

1

Orbital elements

Apogee altitude

35,551.492 km

Perigee altitude

35,460.921 km

Semi-major axis

41,884.344 km

Eccentricity

0.00108

Inclination

4.4133°

RAAN

274.7006°

Arg. of periapsis

178.3491°

True anomaly

Unknown

Mean anomaly

315.0313°

Eccentric anomaly

Unknown

Mean motion

0.2532 °/min

Orbital period

1,421.79 mins

BSTAR

0

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11571 neighbors

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

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

SL-12 PLAT, 10367 (Decayed)

SL-12 DEB, 10368 (Decayed)

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

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

EKRAN 2 DEB, 11581

EKRAN 2 DEB, 12996

EKRAN 2 DEB, 29014

EKRAN 2 DEB, 33519

EKRAN 2 DEB, 59986

EKRAN 2 DEB, 59987

EKRAN 2 DEB, 59988

SL-12 R/B(2) Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-07 02:48:02.449Z	112.377° ESE	2025-07-07 07:51:02.449Z	108.651° ESE	18.042°	2025-07-08 02:48:02.449Z	109.341° ESE

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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.

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