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 (45 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 SL-3 R/B
1 11963U 80073B   25352.25964511  .00000236  00000-0  12373-3 0  9998
2 11963  81.2764 353.1644 0072755 283.5786  75.7288 14.10141563327916

Epoch: 2025-12-18T06:13Z

TLE epoch observation values (Epoch: 2025-12-18T06:13:53.337Z)

Latitude

-0.00005°

Longitude

172.57444°

Altitude

849.167 km

Speed

7.435 km/s

True Right ascension

23h 32m 39s

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

18:32:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

908.692 km

Perigee altitude

803.427 km

Semi-major axis

7,234.197 km

Eccentricity

0.00728

Inclination

81.2764°

RAAN

353.1644°

Arg. of periapsis

283.5786°

True anomaly

76.53857°

Mean anomaly

75.7288°

Eccentric anomaly

76.13351°

Mean motion

3.52742 °/min

Orbital period

102.06 mins

BSTAR

0.00012373

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

METEOR 2-6 DEB, 45500

METEOR 2-6 DEB, 43299

METEOR 2-6 DEB, 38836

METEOR 2-6 DEB, 36308 (Decayed)

METEOR 2-6 DEB, 43297

METEOR 2-6 DEB, 35426

METEOR 2-6 DEB, 43298

METEOR 2-6 DEB, 36307

METEOR 2-6 DEB, 29199

METEOR 2-6 DEB, 31406

METEOR 2-6 DEB, 38837

METEOR 2-6, 11962

METEOR 2-6 DEB, 28987

METEOR 2-6 DEB, 45502

METEOR 2-6 DEB, 29200 (Decayed)

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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.
9 mins	2025-12-19 01:05:23.142Z	188.996° SSW	2025-12-19 01:09:23.142Z	328.7° NNW	44.952°	2025-12-19 01:14:23.142Z	8.598° NNE
10 mins	2025-12-19 11:46:23.142Z	359.068° N	2025-12-19 11:50:23.142Z	60.288° ENE	42.666°	2025-12-19 11:56:23.142Z	162.385° S
4 mins	2025-12-19 13:31:23.142Z	295.318° NW	2025-12-19 13:33:23.142Z	272.212° WNW	14.993°	2025-12-19 13:35:23.142Z	250.121° W

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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-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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2025-12-18T06:13:53.337Z)

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: 13 hours ago