SL-8 DEB, 21402

Orbit data source: Space-Track

SL-8 DEB, 21402 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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https://www.satcat.com/sats-embedded/21402?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21402, 1991-009BR

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: 20 hours ago

TLE from 20 hours ago

0 SL-8 DEB
1 21402U 91009BR  26070.84437846  .00000076  00000-0  85926-3 0  9993
2 21402  74.0313 356.6557 0137113 154.7462 280.8273 12.18410319556883

Epoch: 2026-03-11T20:15Z

TLE epoch observation values (Epoch: 2026-03-11T20:15:54.298Z)

Latitude

67.64586°

Longitude

-72.99721°

Altitude

1,591.722 km

Speed

7.088 km/s

True Right ascension

02h 41m 55s

True Declination

67° 32' 14"

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

20:30:23

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,706.698 km

Perigee altitude

1,487.99 km

Semi-major axis

7,975.481 km

Eccentricity

0.01371

Inclination

74.0313°

RAAN

356.6557°

Arg. of periapsis

154.7462°

True anomaly

279.27928°

Mean anomaly

280.8273°

Eccentric anomaly

280.05376°

Mean motion

3.04725 °/min

Orbital period

118.14 mins

BSTAR

0.00085926

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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	2026-03-12 19:34:35.150Z	179.503° S	2026-03-12 19:43:35.150Z	99.552° ESE	41.67°	2026-03-12 19:52:35.150Z	25.316° NE
15 mins	2026-03-12 21:37:35.150Z	246.782° WSW	2026-03-12 21:44:35.150Z	301.877° NW	28.492°	2026-03-12 21:52:35.150Z	3.575° NNE
9 mins	2026-03-13 03:59:35.150Z	14.967° NNE	2026-03-13 04:03:35.150Z	44.767° NE	16.649°	2026-03-13 04:08:35.150Z	81.571° E
16 mins	2026-03-13 05:58:35.150Z	344.771° N	2026-03-13 06:06:35.150Z	98.704° ESE	43.894°	2026-03-13 06:14:35.150Z	155.547° SSE
10 mins	2026-03-13 08:01:35.150Z	302.244° NW	2026-03-13 08:05:35.150Z	269.799° W	19.992°	2026-03-13 08:11:35.150Z	225.107° WSW

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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, 21402 on other resources

View SL-8 DEB, 21402 on Heavens-Above

View SL-8 DEB, 21402 on Keep Track

View SL-8 DEB, 21402 on Celestrak

View SL-8 DEB, 21402 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, 21402

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-03-11T20:15:54.298Z)

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, 21402 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 20 hours ago