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

Medium (>0.1 m² and <1 m²)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 SL-8 DEB
1 21252U 91009BK  26171.29263225  .00000088  00000-0  90414-3 0  9996
2 21252  74.1046 113.6116 0124141  29.6835 122.2002 12.24986475577388

Epoch: 2026-06-20T07:01Z

TLE epoch observation values (Epoch: 2026-06-20T07:01:23.426Z)

Latitude

25.8499°

Longitude

-88.1373°

Altitude

1,626.983 km

Speed

7.036 km/s

True Right ascension

19h 02m 52s

True Declination

25° 43' 47"

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

00:50:51

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,667.408 km

Perigee altitude

1,470.101 km

Semi-major axis

7,946.891 km

Eccentricity

0.01241

Inclination

74.1046°

RAAN

113.6116°

Arg. of periapsis

29.6835°

True anomaly

123.39399°

Mean anomaly

122.2002°

Eccentric anomaly

122.79809°

Mean motion

3.06371 °/min

Orbital period

117.5 mins

BSTAR

0.00090414

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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.
8 mins	2026-06-22 19:05:18.152Z	118.669° SE	2026-06-22 19:09:18.152Z	90.36° ESE	14.63°	2026-06-22 19:13:18.152Z	61.095° ENE
15 mins	2026-06-22 21:01:18.152Z	193.78° SSW	2026-06-22 21:08:18.152Z	75.554° E	44.89°	2026-06-22 21:16:18.152Z	20.073° NNE
11 mins	2026-06-22 23:04:18.152Z	269.057° W	2026-06-22 23:09:18.152Z	309.332° NW	20.536°	2026-06-22 23:15:18.152Z	355.031° N
13 mins	2026-06-23 05:20:18.152Z	5.515° NNE	2026-06-23 05:26:18.152Z	51.308° ENE	22.758°	2026-06-23 05:33:18.152Z	102.257° ESE
17 mins	2026-06-23 07:19:18.152Z	338.979° N	2026-06-23 07:27:18.152Z	273.791° WNW	44.699°	2026-06-23 07:36:18.152Z	168.396° S
8 mins	2026-06-23 09:22:18.152Z	297.999° NW	2026-06-23 09:26:18.152Z	270.335° WNW	15.227°	2026-06-23 09:30:18.152Z	243.706° WSW

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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: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T07:01:23.426Z)

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: 2 days ago