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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Iframe URL

https://www.satcat.com/sats-embedded/11963?theme=dark&initialShowStats=false

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ISO8601 Format

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 (45 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 1.9 m

Radar Cross Section

10.414 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 SL-3 R/B
1 11963U 80073B   25242.06629403  .00000131  00000-0  65854-4 0  9990
2 11963  81.2744 100.0600 0073112 234.8860 124.5444 14.10112607312384

Epoch: 2025-08-30T01:35Z

TLE epoch observation values (Epoch: 2025-08-30T01:35:27.804Z)

Latitude

0.00002°

Longitude

97.68823°

Altitude

892.157 km

Speed

7.391 km/s

True Right ascension

06h 40m 14s

True Declination

0° 00' 00"

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

07:51:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

909.05 km

Perigee altitude

803.267 km

Semi-major axis

7,234.296 km

Eccentricity

0.00731

Inclination

81.2744°

RAAN

100.06°

Arg. of periapsis

234.886°

True anomaly

125.23091°

Mean anomaly

124.5444°

Eccentric anomaly

124.88801°

Mean motion

3.52735 °/min

Orbital period

102.06 mins

BSTAR

0.000065854

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

METEOR 2-6, 11962

METEOR 2-6 DEB, 28986

METEOR 2-6 DEB, 28987

METEOR 2-6 DEB, 29199

METEOR 2-6 DEB, 29200 (Decayed)

METEOR 2-6 DEB, 29201

METEOR 2-6 DEB, 31406

METEOR 2-6 DEB, 35426

METEOR 2-6 DEB, 36307

METEOR 2-6 DEB, 36308 (Decayed)

METEOR 2-6 DEB, 36309

METEOR 2-6 DEB, 38836

METEOR 2-6 DEB, 38837

METEOR 2-6 DEB, 38838 (Decayed)

SL-3 R/B Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
6 mins	2025-08-30 17:05:17.375Z	264.474° W	2025-08-30 17:08:17.375Z	295.991° NW	14.201°	2025-08-30 17:11:17.375Z	327.073° NNW
9 mins	2025-08-31 02:01:17.375Z	2.725° NNE	2025-08-31 02:05:17.375Z	59.612° ENE	39.377°	2025-08-31 02:10:17.375Z	153.52° SSE
5 mins	2025-08-31 03:46:17.375Z	299.063° NW	2025-08-31 03:48:17.375Z	274.013° WNW	16.978°	2025-08-31 03:51:17.375Z	239.066° WSW
10 mins	2025-08-31 15:10:17.375Z	180.222° SSW	2025-08-31 15:15:17.375Z	57.786° ENE	43.721°	2025-08-31 15:20:17.375Z	12.802° NNE

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: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2025-08-30T01:35:27.804Z)

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: 15 hours ago