SL-8 DEB, 21180

Orbit data source: Space-Track

SL-8 DEB, 21180 is space debris in LEO originally from a launch on Tue, 12 Feb 1991 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 src="https://www.satcat.com/sats-embedded/21180?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/21180?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21180, 1991-009AT

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1991-02-12 (35 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 SL-8 DEB
1 21180U 91009AT  26070.80595626  .00000050  00000-0  54817-3 0  9990
2 21180  74.0592  85.4728 0103157  91.6114  82.3759 12.28924208568735

Epoch: 2026-03-11T19:20Z

TLE epoch observation values (Epoch: 2026-03-11T19:20:34.620Z)

Latitude

4.57817°

Longitude

164.55946°

Altitude

1,545.76 km

Speed

7.099 km/s

True Right ascension

17h 36m 40s

True Declination

4° 33' 13"

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

15:36:39

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,633.566 km

Perigee altitude

1,469.961 km

Semi-major axis

7,929.901 km

Eccentricity

0.01032

Inclination

74.0592°

RAAN

85.4728°

Arg. of periapsis

91.6114°

True anomaly

83.54947°

Mean anomaly

82.3759°

Eccentric anomaly

82.96249°

Mean motion

3.07356 °/min

Orbital period

117.13 mins

BSTAR

0.00054817

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Other satellites on launch #9 in the year 1991 (1991-02-12 UTC)

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SL-8 DEB 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.
17 mins	2026-03-12 12:35:39.044Z	336.249° NNW	2026-03-12 12:43:39.044Z	267.359° W	43.229°	2026-03-12 12:52:39.044Z	174.552° S
4 mins	2026-03-12 23:53:39.044Z	96.257° ESE	2026-03-12 23:54:39.044Z	89.174° E	12.381°	2026-03-12 23:57:39.044Z	68.184° E
16 mins	2026-03-13 01:45:39.044Z	187.5° SSW	2026-03-13 01:52:39.044Z	126.372° SE	43.981°	2026-03-13 02:01:39.044Z	22.245° NNE
12 mins	2026-03-13 03:47:39.044Z	259.398° W	2026-03-13 03:53:39.044Z	308.31° NW	23.145°	2026-03-13 03:59:39.044Z	355.964° N
10 mins	2026-03-13 10:04:39.044Z	14.225° NNE	2026-03-13 10:08:39.044Z	45.505° ENE	18.834°	2026-03-13 10:14:39.044Z	90.943° ESE

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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-8 DEB, 21180 on other resources

View SL-8 DEB, 21180 on Heavens-Above

View SL-8 DEB, 21180 on Keep Track

View SL-8 DEB, 21180 on Celestrak

View SL-8 DEB, 21180 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-8 DEB, 21180

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2026-03-11T19:20:34.620Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #9 in the year 1991 (1991-02-12 UTC)

SL-8 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-8 DEB, 21180 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago