SL-8 DEB, 21750

Orbit data source: Space-Track

SL-8 DEB, 21750 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 URL

https://www.satcat.com/sats-embedded/21750?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21750, 1991-009CQ

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: 3 weeks ago

TLE from 3 weeks ago

0 SL-8 DEB
1 21750U 91009CQ  26149.61860273  .00000590  00000-0  50130-2 0  9994
2 21750  74.0776  18.9922 0134873  41.2885 347.3352 12.29699576575711

Epoch: 2026-05-29T14:50Z

TLE epoch observation values (Epoch: 2026-05-29T14:50:47.275Z)

Latitude

27.14492°

Longitude

-82.48227°

Altitude

1,449.106 km

Speed

7.187 km/s

True Right ascension

01h 49m 26s

True Declination

27° 01' 04"

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

00:39:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,655.335 km

Perigee altitude

1,441.519 km

Semi-major axis

7,926.564 km

Eccentricity

0.01349

Inclination

74.0776°

RAAN

18.9922°

Arg. of periapsis

41.2885°

True anomaly

346.99069°

Mean anomaly

347.3352°

Eccentric anomaly

347.16352°

Mean motion

3.0755 °/min

Orbital period

117.05 mins

BSTAR

0.005013

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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	2026-06-22 14:47:14.462Z	256.152° W	2026-06-22 14:54:14.462Z	311.247° NW	22.494°	2026-06-22 15:00:14.462Z	357.143° N
12 mins	2026-06-22 21:04:14.462Z	9.689° NNE	2026-06-22 21:09:14.462Z	46.895° ENE	20.624°	2026-06-22 21:16:14.462Z	96.495° ESE
17 mins	2026-06-22 23:02:14.462Z	341.431° N	2026-06-22 23:10:14.462Z	6.435° NNE	44.917°	2026-06-22 23:19:14.462Z	162.65° S
10 mins	2026-06-23 01:04:14.462Z	303.33° NW	2026-06-23 01:09:14.462Z	267.202° W	18.277°	2026-06-23 01:14:14.462Z	233.475° WSW
14 mins	2026-06-23 12:12:14.462Z	171.509° S	2026-06-23 12:18:14.462Z	111.603° ESE	39.193°	2026-06-23 12:26:14.462Z	28.748° NE

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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, 21750 on other resources

View SL-8 DEB, 21750 on Heavens-Above

View SL-8 DEB, 21750 on Keep Track

View SL-8 DEB, 21750 on Celestrak

View SL-8 DEB, 21750 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, 21750

Orbit data source: Space-Track

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

TLE from 3 weeks ago

TLE epoch observation values (Epoch: 2026-05-29T14:50:47.275Z)

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, 21750 on other resources

Documentation

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