SL-8 DEB, 21406

Orbit data source: Space-Track

SL-8 DEB, 21406 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/21406?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21406, 1991-009BV

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 21406U 91009BV  26070.83995853  .00000107  00000-0  98710-3 0  9993
2 21406  73.9132 207.7712 0135486 190.3827 325.4439 12.31824610568639

Epoch: 2026-03-11T20:09Z

TLE epoch observation values (Epoch: 2026-03-11T20:09:32.416Z)

Latitude

24.05006°

Longitude

-91.47012°

Altitude

1,455.937 km

Speed

7.176 km/s

True Right ascension

01h 21m 39s

True Declination

23° 56' 01"

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

20:11:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,646.586 km

Perigee altitude

1,432.045 km

Semi-major axis

7,917.453 km

Eccentricity

0.01355

Inclination

73.9132°

RAAN

207.7712°

Arg. of periapsis

190.3827°

True anomaly

324.55086°

Mean anomaly

325.4439°

Eccentric anomaly

324.99863°

Mean motion

3.08081 °/min

Orbital period

116.85 mins

BSTAR

0.0009871

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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.
16 mins	2026-03-12 19:17:32.091Z	351.493° N	2026-03-12 19:25:32.091Z	55.59° ENE	33.817°	2026-03-12 19:33:32.091Z	128.917° SE
14 mins	2026-03-12 21:18:32.091Z	324.142° NNW	2026-03-12 21:25:32.091Z	254.974° W	34.282°	2026-03-12 21:32:32.091Z	195.446° SSW
12 mins	2026-03-13 08:27:32.091Z	135.559° SSE	2026-03-13 08:33:32.091Z	91.658° ESE	22.633°	2026-03-13 08:39:32.091Z	47.651° ENE
17 mins	2026-03-13 10:23:32.091Z	205.966° SW	2026-03-13 10:31:32.091Z	269.684° W	43.903°	2026-03-13 10:40:32.091Z	15.784° NNE
10 mins	2026-03-13 12:28:32.091Z	281.139° WNW	2026-03-13 12:32:32.091Z	309.341° NW	17.783°	2026-03-13 12:38:32.091Z	351.72° 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, 21406 on other resources

View SL-8 DEB, 21406 on Heavens-Above

View SL-8 DEB, 21406 on Keep Track

View SL-8 DEB, 21406 on Celestrak

View SL-8 DEB, 21406 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, 21406

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: 2026-03-11T20:09:32.416Z)

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, 21406 on other resources

Documentation

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