SL-8 DEB, 21175

Orbit data source: Space-Track

SL-8 DEB, 21175 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/21175?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/21175?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21175, 1991-009AN

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: 2 days ago

TLE from 2 days ago

0 SL-8 DEB
1 21175U 91009AN  26171.45190573 -.00000021  00000-0 -54406-4 0  9994
2 21175  73.9326 171.1814 0146139 100.6842  17.9769 12.28585135582819

Epoch: 2026-06-20T10:50Z

TLE epoch observation values (Epoch: 2026-06-20T10:50:44.655Z)

Latitude

57.12608°

Longitude

-106.49562°

Altitude

1,454.415 km

Speed

7.19 km/s

True Right ascension

21h 39m 25s

True Declination

56° 58' 59"

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

02:13:16

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,669.141 km

Perigee altitude

1,437.325 km

Semi-major axis

7,931.37 km

Eccentricity

0.01461

Inclination

73.9326°

RAAN

171.1814°

Arg. of periapsis

100.6842°

True anomaly

18.50287°

Mean anomaly

17.9769°

Eccentric anomaly

18.23896°

Mean motion

3.0727 °/min

Orbital period

117.16 mins

BSTAR

-0.000054406

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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 22:55:29.434Z	118.42° SE	2026-06-22 22:59:29.434Z	90.236° ESE	14.945°	2026-06-22 23:03:29.434Z	61.089° ENE
16 mins	2026-06-23 00:50:29.434Z	193.946° SSW	2026-06-23 00:57:29.434Z	166.967° S	44.654°	2026-06-23 01:06:29.434Z	20.352° NNE
11 mins	2026-06-23 02:53:29.434Z	267.255° W	2026-06-23 02:58:29.434Z	306.583° NW	20.572°	2026-06-23 03:04:29.434Z	353.905° N
11 mins	2026-06-23 09:09:29.434Z	11.756° NNE	2026-06-23 09:14:29.434Z	53.785° ENE	20.99°	2026-06-23 09:20:29.434Z	99.368° ESE
16 mins	2026-06-23 11:07:29.434Z	338.881° N	2026-06-23 11:14:29.434Z	300.273° NW	44.524°	2026-06-23 11:23:29.434Z	167.307° S
6 mins	2026-06-23 13:10:29.434Z	291.629° WNW	2026-06-23 13:13:29.434Z	269.36° W	13.963°	2026-06-23 13:16:29.434Z	247.866° W

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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, 21175 on other resources

View SL-8 DEB, 21175 on Heavens-Above

View SL-8 DEB, 21175 on Keep Track

View SL-8 DEB, 21175 on Celestrak

View SL-8 DEB, 21175 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, 21175

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: 2026-06-20T10:50:44.655Z)

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, 21175 on other resources

Documentation

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