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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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

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago

0 SL-3 R/B
1 11963U 80073B   26046.79040353  .00000247  00000-0  12847-3 0  9995
2 11963  81.2772 295.4204 0076136 114.4296 246.4843 14.10158818336308

Epoch: 2026-02-15T18:58Z

TLE epoch observation values (Epoch: 2026-02-15T18:58:10.864Z)

Latitude

-0.00005°

Longitude

-134.91892°

Altitude

884.07 km

Speed

7.399 km/s

True Right ascension

19h 41m 40s

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

04:55:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

911.078 km

Perigee altitude

800.923 km

Semi-major axis

7,234.137 km

Eccentricity

0.00761

Inclination

81.2772°

RAAN

295.4204°

Arg. of periapsis

114.4296°

True anomaly

245.68735°

Mean anomaly

246.4843°

Eccentric anomaly

246.08552°

Mean motion

3.52747 °/min

Orbital period

102.06 mins

BSTAR

0.00012847

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

METEOR 2-6 DEB, 29199

METEOR 2-6 DEB, 45500

METEOR 2-6 DEB, 28987

METEOR 2-6 DEB, 36309

METEOR 2-6, 11962

METEOR 2-6 DEB, 36308 (Decayed)

METEOR 2-6 DEB, 29200 (Decayed)

METEOR 2-6 DEB, 38837 (Decayed)

METEOR 2-6 DEB, 43298

METEOR 2-6 DEB, 36307

METEOR 2-6 DEB, 28986

METEOR 2-6 DEB, 29201

METEOR 2-6 DEB, 45501

METEOR 2-6 DEB, 38838 (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.
10 mins	2026-02-16 04:02:51.209Z	357.864° N	2026-02-16 04:07:51.209Z	64.051° ENE	41.077°	2026-02-16 04:12:51.209Z	158.025° S
4 mins	2026-02-16 05:48:51.209Z	296.196° NW	2026-02-16 05:50:51.209Z	271.685° WNW	14.249°	2026-02-16 05:52:51.209Z	248.315° W
9 mins	2026-02-16 17:13:51.209Z	184.745° SSW	2026-02-16 17:17:51.209Z	103.352° ESE	44.878°	2026-02-16 17:22:51.209Z	10.635° NNE

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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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-02-15T18:58:10.864Z)

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: 7 hours ago