SL-8 DEB, 21183

Orbit data source: Space-Track

SL-8 DEB, 21183 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/21183?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/21183?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21183, 1991-009AW

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, 0.2 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 3 days ago

TLE from 3 days ago

0 SL-8 DEB
1 21183U 91009AW  26171.38153104  .00000209  00000-0  24050-2 0  9990
2 21183  74.1858  35.4588 0217277 237.8373 311.5618 12.05600847552079

Epoch: 2026-06-20T09:09Z

TLE epoch observation values (Epoch: 2026-06-20T09:09:24.281Z)

Latitude

-7.35531°

Longitude

171.59573°

Altitude

1,545.819 km

Speed

7.144 km/s

True Right ascension

14h 30m 10s

True Declination

-7° 18' 58"

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

08:23:59

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,828.269 km

Perigee altitude

1,479.24 km

Semi-major axis

8,031.892 km

Eccentricity

0.02173

Inclination

74.1858°

RAAN

35.4588°

Arg. of periapsis

237.8373°

True anomaly

309.66501°

Mean anomaly

311.5618°

Eccentric anomaly

310.61682°

Mean motion

3.0152 °/min

Orbital period

119.39 mins

BSTAR

0.002405

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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.
16 mins	2026-06-23 00:25:11.172Z	354.798° N	2026-06-23 00:34:11.172Z	58.596° ENE	27.619°	2026-06-23 00:41:11.172Z	111.145° ESE
17 mins	2026-06-23 02:28:11.172Z	334.833° NNW	2026-06-23 02:36:11.172Z	269.387° W	42.513°	2026-06-23 02:45:11.172Z	178.362° S
13 mins	2026-06-23 13:53:11.172Z	127.006° SE	2026-06-23 13:59:11.172Z	87.001° E	20.825°	2026-06-23 14:06:11.172Z	44.132° NE
19 mins	2026-06-23 15:51:11.172Z	199.313° SSW	2026-06-23 15:59:11.172Z	238.848° WSW	44.776°	2026-06-23 16:10:11.172Z	18.347° NNE
14 mins	2026-06-23 17:57:11.172Z	270.164° WNW	2026-06-23 18:03:11.172Z	310.614° NW	21.764°	2026-06-23 18:11:11.172Z	1.148° 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-8 DEB, 21183 on other resources

View SL-8 DEB, 21183 on Heavens-Above

View SL-8 DEB, 21183 on Keep Track

View SL-8 DEB, 21183 on Celestrak

View SL-8 DEB, 21183 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, 21183

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-20T09:09:24.281Z)

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, 21183 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago