SL-8 DEB, 21250

Orbit data source: Space-Track

SL-8 DEB, 21250 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/21250?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/21250?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21250, 1991-009BH

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)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 SL-8 DEB
1 21250U 91009BH  26171.46460269  .00000083  00000-0  93332-3 0  9997
2 21250  74.0610 253.2280 0141254 310.7372 183.0558 12.18909342569753

Epoch: 2026-06-20T11:09Z

TLE epoch observation values (Epoch: 2026-06-20T11:09:01.672Z)

Latitude

44.12125°

Longitude

-18.70836°

Altitude

1,715.958 km

Speed

6.973 km/s

True Right ascension

03h 48m 54s

True Declination

43° 58' 11"

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

23:27:08

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,707.79 km

Perigee altitude

1,482.538 km

Semi-major axis

7,973.301 km

Eccentricity

0.01413

Inclination

74.061°

RAAN

253.228°

Arg. of periapsis

310.7372°

True anomaly

182.97101°

Mean anomaly

183.0558°

Eccentric anomaly

183.01326°

Mean motion

3.0485 °/min

Orbital period

118.09 mins

BSTAR

0.00093332

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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.
12 mins	2026-06-22 14:11:48.765Z	4.091° NNE	2026-06-22 14:17:48.765Z	42.432° NE	17.557°	2026-06-22 14:23:48.765Z	82.075° E
17 mins	2026-06-22 16:12:48.765Z	346.627° N	2026-06-22 16:20:48.765Z	67.916° E	43.454°	2026-06-22 16:29:48.765Z	151.824° SSE
13 mins	2026-06-22 18:14:48.765Z	311.391° NW	2026-06-22 18:20:48.765Z	265.735° W	24.589°	2026-06-22 18:27:48.765Z	217.593° SW
15 mins	2026-06-23 05:28:48.765Z	163.356° S	2026-06-23 05:35:48.765Z	94.43° ESE	36.329°	2026-06-23 05:43:48.765Z	30.845° NE
16 mins	2026-06-23 07:28:48.765Z	234.76° WSW	2026-06-23 07:35:48.765Z	293.322° NW	33.674°	2026-06-23 07:44:48.765Z	7.607° 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, 21250 on other resources

View SL-8 DEB, 21250 on Heavens-Above

View SL-8 DEB, 21250 on Keep Track

View SL-8 DEB, 21250 on Celestrak

View SL-8 DEB, 21250 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, 21250

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: 2026-06-20T11:09:01.672Z)

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, 21250 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago