SL-8 DEB, 21252

Orbit data source: Space-Track

SL-8 DEB, 21252 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/21252?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/21252?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21252, 1991-009BK

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: 8 hours ago

TLE from 8 hours ago

0 SL-8 DEB
1 21252U 91009BK  26070.93244308  .00000061  00000-0  66753-3 0  9996
2 21252  74.1029 240.2745 0125429 173.8119 341.3163 12.24974929565099

Epoch: 2026-03-11T22:22Z

TLE epoch observation values (Epoch: 2026-03-11T22:22:43.082Z)

Latitude

24.33544°

Longitude

-92.3586°

Altitude

1,479.042 km

Speed

7.168 km/s

True Right ascension

03h 31m 38s

True Declination

24° 13' 06"

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

10:29:59

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,668.482 km

Perigee altitude

1,469.127 km

Semi-major axis

7,946.941 km

Eccentricity

0.01254

Inclination

74.1029°

RAAN

240.2745°

Arg. of periapsis

173.8119°

True anomaly

340.84893°

Mean anomaly

341.3163°

Eccentric anomaly

341.08332°

Mean motion

3.06368 °/min

Orbital period

117.51 mins

BSTAR

0.00066753

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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 11:19:49.082Z	162.198° S	2026-03-12 11:27:49.082Z	104.388° ESE	33.288°	2026-03-12 11:36:49.082Z	32.291° NE
16 mins	2026-03-12 13:20:49.082Z	228.881° WSW	2026-03-12 13:27:49.082Z	291.082° WNW	36.804°	2026-03-12 13:36:49.082Z	9.32° NNE
15 mins	2026-03-12 21:39:49.082Z	352.725° N	2026-03-12 21:47:49.082Z	72.918° E	36.606°	2026-03-12 21:54:49.082Z	134.208° SE
13 mins	2026-03-12 23:40:49.082Z	320.027° NNW	2026-03-12 23:46:49.082Z	265.973° W	31.019°	2026-03-12 23:53:49.082Z	203.706° SW

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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, 21252 on other resources

View SL-8 DEB, 21252 on Heavens-Above

View SL-8 DEB, 21252 on Keep Track

View SL-8 DEB, 21252 on Celestrak

View SL-8 DEB, 21252 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, 21252

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-03-11T22:22:43.082Z)

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, 21252 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago