SL-3 R/B, 11963

Orbit data source: Space-Track

SL-3 R/B, 11963 is space debris in LEO originally from a launch on Tue, 09 Sep 1980 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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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https://www.satcat.com/sats-embedded/11963?theme=dark&initialShowStats=false

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Identifier

11963, 1980-073B

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Progress

Mission

Spacecraft

Bus & Motor

BLOK-E, Unknown motor

Mass

1,440 kg wet, 1,440 kg dry

Launch date (UTC)

1980-09-09 (46 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CYL, 1.1 m

Radar Cross Section

Large (>1 m²)

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

TLE from 9 hours ago

0 SL-3 R/B
1 11963U 80073B   26316.69452644  .00000193  00000-0  98861-4 0  9995
2 11963  81.2785  33.5978 0075272  70.6988 290.2304 14.10190971374343

Epoch: 2026-11-12T16:40Z

TLE epoch observation values (Epoch: 2026-11-12T16:40:07.084Z)

Latitude

-0.00002°

Longitude

91.74394°

Altitude

843.141 km

Speed

7.441 km/s

True Right ascension

02h 14m 23s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

21:56:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

910.342 km

Perigee altitude

801.438 km

Semi-major axis

7,234.027 km

Eccentricity

0.00753

Inclination

81.2785°

RAAN

33.5978°

Arg. of periapsis

70.6988°

True anomaly

289.41844°

Mean anomaly

290.2304°

Eccentric anomaly

289.82468°

Mean motion

3.52755 °/min

Orbital period

102.05 mins

BSTAR

0.000098861

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Other satellites on launch #73 in the year 1980 (1980-09-09 UTC)

METEOR 2-6 DEB, 45502

METEOR 2-6 DEB, 45501

METEOR 2-6 DEB, 36309

METEOR 2-6 DEB, 29199

METEOR 2-6 DEB, 28986

METEOR 2-6 DEB, 29201

METEOR 2-6, 11962

METEOR 2-6 DEB, 36308 (Decayed)

METEOR 2-6 DEB, 29200 (Decayed)

METEOR 2-6 DEB, 31406

METEOR 2-6 DEB, 28987

METEOR 2-6 DEB, 43298

METEOR 2-6 DEB, 45500

METEOR 2-6 DEB, 38836

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SL-3 R/B 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.
4 mins	2026-11-13 04:44:23.747Z	109.229° ESE	2026-11-13 04:46:23.747Z	85.96° E	14.24°	2026-11-13 04:48:23.747Z	62.21° ENE
8 mins	2026-11-13 06:25:23.747Z	204.151° SW	2026-11-13 06:29:23.747Z	307.907° NW	61.477°	2026-11-13 06:33:23.747Z	0.901° NNE
9 mins	2026-11-13 17:05:23.747Z	351.291° N	2026-11-13 17:09:23.747Z	359.59° N	82.926°	2026-11-13 17:14:23.747Z	171.908° S

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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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Check out SL-3 R/B, 11963 on other resources

View SL-3 R/B, 11963 on Heavens-Above

View SL-3 R/B, 11963 on Keep Track

View SL-3 R/B, 11963 on Celestrak

View SL-3 R/B, 11963 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-3 R/B, 11963

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: 2026-11-12T16:40:07.084Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #73 in the year 1980 (1980-09-09 UTC)

SL-3 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-3 R/B, 11963 on other resources

Documentation

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