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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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

Small (<0.1 m²)

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

TLE from 3 days ago

0 SL-8 DEB
1 21115U 91009M   26068.43230406 -.00000026  00000-0 -11092-3 0  9999
2 21115  74.0365  61.2950 0184491 182.4942 332.0830 12.16927966557046

Epoch: 2026-03-09T10:22Z

TLE epoch observation values (Epoch: 2026-03-09T10:22:31.070Z)

Latitude

25.37436°

Longitude

-89.21871°

Altitude

1,478.937 km

Speed

7.184 km/s

True Right ascension

15h 34m 08s

True Declination

25° 15' 13"

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

10:29:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,751.082 km

Perigee altitude

1,456.562 km

Semi-major axis

7,981.959 km

Eccentricity

0.01845

Inclination

74.0365°

RAAN

61.295°

Arg. of periapsis

182.4942°

True anomaly

331.07267°

Mean anomaly

332.083°

Eccentric anomaly

331.57991°

Mean motion

3.04354 °/min

Orbital period

118.28 mins

BSTAR

-0.00011092

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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.
15 mins	2026-03-12 09:08:48.664Z	354.458° N	2026-03-12 09:16:48.664Z	58.535° ENE	30.029°	2026-03-12 09:23:48.664Z	118.986° SE
15 mins	2026-03-12 11:10:48.664Z	328.936° NNW	2026-03-12 11:17:48.664Z	260.214° W	38.476°	2026-03-12 11:25:48.664Z	186.908° SSW
12 mins	2026-03-12 22:28:48.664Z	132.416° SE	2026-03-12 22:34:48.664Z	89.934° E	22.254°	2026-03-12 22:40:48.664Z	47.906° ENE
18 mins	2026-03-13 00:25:48.664Z	203.952° SW	2026-03-13 00:34:48.664Z	310.97° NW	44.297°	2026-03-13 00:43:48.664Z	16.733° NNE
11 mins	2026-03-13 02:31:48.664Z	276.586° WNW	2026-03-13 02:36:48.664Z	310.907° NW	18.868°	2026-03-13 02:42:48.664Z	352.495° 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: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-03-09T10:22:31.070Z)

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: 3 days ago