SL-8 DEB, 21179

Orbit data source: Space-Track

SL-8 DEB, 21179 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/21179?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/21179?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21179, 1991-009AS

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: 14 hours ago

TLE from 14 hours ago

0 SL-8 DEB
1 21179U 91009AS  26154.74120468 -.00000039  00000-0 -24951-3 0  9997
2 21179  73.9912 272.9198 0121666 150.9576 282.8615 12.16219524567593

Epoch: 2026-06-03T17:47Z

TLE epoch observation values (Epoch: 2026-06-03T17:47:20.084Z)

Latitude

66.50722°

Longitude

154.95335°

Altitude

1,599.681 km

Speed

7.085 km/s

True Right ascension

20h 55m 55s

True Declination

66° 23' 40"

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

17:44:20

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,704.078 km

Perigee altitude

1,509.776 km

Semi-major axis

7,985.064 km

Eccentricity

0.01217

Inclination

73.9912°

RAAN

272.9198°

Arg. of periapsis

150.9576°

True anomaly

281.4978°

Mean anomaly

282.8615°

Eccentric anomaly

282.1801°

Mean motion

3.04176 °/min

Orbital period

118.35 mins

BSTAR

-0.00024951

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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.
18 mins	2026-06-04 09:15:42.657Z	202.419° SSW	2026-06-04 09:24:42.657Z	267.314° W	44.448°	2026-06-04 09:33:42.657Z	16.822° NNE
11 mins	2026-06-04 11:22:42.657Z	277.727° WNW	2026-06-04 11:27:42.657Z	313.833° NW	18.546°	2026-06-04 11:33:42.657Z	355.219° N
14 mins	2026-06-04 17:40:42.657Z	1.012° NNE	2026-06-04 17:47:42.657Z	60.226° ENE	26.868°	2026-06-04 17:54:42.657Z	114.194° SE
15 mins	2026-06-04 19:41:42.657Z	332.215° NNW	2026-06-04 19:48:42.657Z	258.936° W	41.607°	2026-06-04 19:56:42.657Z	180.332° SSW
10 mins	2026-06-05 07:01:42.657Z	122.317° SE	2026-06-05 07:06:42.657Z	87.228° E	18.101°	2026-06-05 07:11:42.657Z	52.963° ENE

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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, 21179 on other resources

View SL-8 DEB, 21179 on Heavens-Above

View SL-8 DEB, 21179 on Keep Track

View SL-8 DEB, 21179 on Celestrak

View SL-8 DEB, 21179 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, 21179

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-06-03T17:47:20.084Z)

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, 21179 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago