SL-8 DEB, 21249

Orbit data source: Space-Track

SL-8 DEB, 21249 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/21249?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/21249?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21249, 1991-009BG

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: 15 hours ago

TLE from 15 hours ago

0 SL-8 DEB
1 21249U 91009BG  26070.75580463  .00000034  00000-0  44865-3 0  9997
2 21249  74.0699 279.9937 0121999 309.2671 129.2095 12.22360807562046

Epoch: 2026-03-11T18:08Z

TLE epoch observation values (Epoch: 2026-03-11T18:08:21.520Z)

Latitude

71.10058°

Longitude

-105.44488°

Altitude

1,656.311 km

Speed

7.023 km/s

True Right ascension

22h 24m 14s

True Declination

71° 00' 24"

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

13:48:48

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,677.229 km

Perigee altitude

1,483.049 km

Semi-major axis

7,958.276 km

Eccentricity

0.0122

Inclination

74.0699°

RAAN

279.9937°

Arg. of periapsis

309.2671°

True anomaly

130.28232°

Mean anomaly

129.2095°

Eccentric anomaly

129.74695°

Mean motion

3.05714 °/min

Orbital period

117.76 mins

BSTAR

0.00044865

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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.
13 mins	2026-03-12 13:27:05.975Z	138.984° SSE	2026-03-12 13:33:05.975Z	94.064° ESE	23.31°	2026-03-12 13:40:05.975Z	42.947° NE
17 mins	2026-03-12 15:25:05.975Z	209.77° SW	2026-03-12 15:33:05.975Z	309.185° NW	43.123°	2026-03-12 15:42:05.975Z	15.546° NNE
9 mins	2026-03-12 17:31:05.975Z	288.01° WNW	2026-03-12 17:35:05.975Z	316.692° NNW	16.576°	2026-03-12 17:40:05.975Z	350.612° N
15 mins	2026-03-12 23:46:05.975Z	359.02° N	2026-03-12 23:53:05.975Z	54.804° ENE	30.577°	2026-03-13 00:01:05.975Z	118.559° SE
17 mins	2026-03-13 01:46:05.975Z	331.569° NNW	2026-03-13 01:54:05.975Z	258.207° W	40.522°	2026-03-13 02:03:05.975Z	183.563° SSW

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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, 21249 on other resources

View SL-8 DEB, 21249 on Heavens-Above

View SL-8 DEB, 21249 on Keep Track

View SL-8 DEB, 21249 on Celestrak

View SL-8 DEB, 21249 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, 21249

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-03-11T18:08:21.520Z)

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, 21249 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago