SL-8 DEB, 21115

Orbit data source: Space-Track

SL-8 DEB, 21115 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/21115?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/21115?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21115, 1991-009M

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: 2 days ago

TLE from 2 days ago

0 SL-8 DEB
1 21115U 91009M   26171.40742262 -.00000046  00000-0 -30507-3 0  9993
2 21115  74.0391 292.7278 0184468  36.3916  23.9751 12.16942209569577

Epoch: 2026-06-20T09:46Z

TLE epoch observation values (Epoch: 2026-06-20T09:46:41.314Z)

Latitude

57.54399°

Longitude

-95.98405°

Altitude

1,481.033 km

Speed

7.188 km/s

True Right ascension

21h 17m 14s

True Declination

57° 24' 09"

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

02:14:51

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,751 km

Perigee altitude

1,456.519 km

Semi-major axis

7,981.896 km

Eccentricity

0.01845

Inclination

74.0391°

RAAN

292.7278°

Arg. of periapsis

36.3916°

True anomaly

24.85248°

Mean anomaly

23.9751°

Eccentric anomaly

24.41192°

Mean motion

3.04358 °/min

Orbital period

118.28 mins

BSTAR

-0.00030507

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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 17:16:04.318Z	4.937° NNE	2026-06-22 17:22:04.318Z	49.176° ENE	21.827°	2026-06-22 17:29:04.318Z	99.201° ESE
18 mins	2026-06-22 19:16:04.318Z	339.969° N	2026-06-22 19:24:04.318Z	298.215° NW	44.885°	2026-06-22 19:34:04.318Z	165.844° S
9 mins	2026-06-22 21:20:04.318Z	297.489° NW	2026-06-22 21:24:04.318Z	269.208° W	16.644°	2026-06-22 21:29:04.318Z	236.791° WSW
15 mins	2026-06-23 08:34:04.318Z	182.18° SSW	2026-06-23 08:41:04.318Z	113.53° SE	42.589°	2026-06-23 08:49:04.318Z	24.992° NE
12 mins	2026-06-23 10:37:04.318Z	256.161° W	2026-06-23 10:43:04.318Z	308.516° NW	24.802°	2026-06-23 10:49:04.318Z	357.33° N

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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, 21115 on other resources

View SL-8 DEB, 21115 on Heavens-Above

View SL-8 DEB, 21115 on Keep Track

View SL-8 DEB, 21115 on Celestrak

View SL-8 DEB, 21115 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, 21115

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: 2026-06-20T09:46:41.314Z)

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, 21115 on other resources

Documentation

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