SL-8 DEB, 21169

Orbit data source: Space-Track

SL-8 DEB, 21169 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/21169?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/21169?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21169, 1991-009AG

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, 0.4 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 SL-8 DEB
1 21169U 91009AG  26070.47588735  .00000007  00000-0  19778-3 0  9992
2 21169  73.9975 179.3821 0131624  17.5505  55.3990 12.22906115563185

Epoch: 2026-03-11T11:25Z

TLE epoch observation values (Epoch: 2026-03-11T11:25:16.667Z)

Latitude

67.74556°

Longitude

-116.85508°

Altitude

1,532.727 km

Speed

7.132 km/s

True Right ascension

14h 54m 24s

True Declination

67° 38' 12"

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

10:28:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,682.496 km

Perigee altitude

1,473.058 km

Semi-major axis

7,955.914 km

Eccentricity

0.01316

Inclination

73.9975°

RAAN

179.3821°

Arg. of periapsis

17.5505°

True anomaly

56.65213°

Mean anomaly

55.399°

Eccentric anomaly

56.0244°

Mean motion

3.0585 °/min

Orbital period

117.7 mins

BSTAR

0.00019778

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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	2026-03-12 06:46:12.310Z	136.411° SSE	2026-03-12 06:52:12.310Z	87.94° E	21.979°	2026-03-12 06:58:12.310Z	43.95° NE
15 mins	2026-03-12 08:44:12.310Z	210.552° SW	2026-03-12 08:51:12.310Z	298.312° NW	43.159°	2026-03-12 08:59:12.310Z	14.496° NNE
8 mins	2026-03-12 10:50:12.310Z	293.292° NW	2026-03-12 10:53:12.310Z	315.951° NNW	15.372°	2026-03-12 10:58:12.310Z	351.022° N
15 mins	2026-03-12 17:04:12.310Z	1.512° NNE	2026-03-12 17:11:12.310Z	62.961° ENE	29.814°	2026-03-12 17:19:12.310Z	120.737° SE
16 mins	2026-03-12 19:04:12.310Z	330.385° NNW	2026-03-12 19:11:12.310Z	263.982° W	40.555°	2026-03-12 19:20:12.310Z	183.288° 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, 21169 on other resources

View SL-8 DEB, 21169 on Heavens-Above

View SL-8 DEB, 21169 on Keep Track

View SL-8 DEB, 21169 on Celestrak

View SL-8 DEB, 21169 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, 21169

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-03-11T11:25:16.667Z)

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, 21169 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago