SL-8 DEB, 21212

Orbit data source: Space-Track

SL-8 DEB, 21212 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/21212?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/21212?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21212, 1991-009BF

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: 10 hours ago

TLE from 10 hours ago

0 SL-8 DEB
1 21212U 91009BF  26070.78930488 -.00000001  00000-0  13319-3 0  9991
2 21212  74.1581  92.1969 0231754 359.4733  40.8826 12.06939984539958

Epoch: 2026-03-11T18:56Z

TLE epoch observation values (Epoch: 2026-03-11T18:56:35.941Z)

Latitude

40.27739°

Longitude

12.4425°

Altitude

1,516.425 km

Speed

7.172 km/s

True Right ascension

07h 04m 09s

True Declination

40° 07' 27"

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

09:06:01

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,833.816 km

Perigee altitude

1,461.807 km

Semi-major axis

8,025.948 km

Eccentricity

0.02318

Inclination

74.1581°

RAAN

92.1969°

Arg. of periapsis

359.4733°

True anomaly

42.65939°

Mean anomaly

40.8826°

Eccentric anomaly

41.76709°

Mean motion

3.01855 °/min

Orbital period

119.26 mins

BSTAR

0.00013319

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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.
11 mins	2026-03-12 04:52:04.904Z	273.681° WNW	2026-03-12 04:58:04.904Z	317.656° NNW	17.673°	2026-03-12 05:03:04.904Z	352.598° N
16 mins	2026-03-12 11:13:04.904Z	358.721° N	2026-03-12 11:21:04.904Z	61.109° ENE	29.784°	2026-03-12 11:29:04.904Z	117.246° SE
18 mins	2026-03-12 13:15:04.904Z	332.807° NNW	2026-03-12 13:23:04.904Z	259.587° W	41.873°	2026-03-12 13:33:04.904Z	180.505° SSW
10 mins	2026-03-13 00:41:04.904Z	125.623° SE	2026-03-13 00:46:04.904Z	86.603° E	18.89°	2026-03-13 00:51:04.904Z	50.32° ENE
16 mins	2026-03-13 02:39:04.904Z	203.502° SW	2026-03-13 02:46:04.904Z	272.897° WNW	44.447°	2026-03-13 02:55:04.904Z	16.89° NNE

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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, 21212 on other resources

View SL-8 DEB, 21212 on Heavens-Above

View SL-8 DEB, 21212 on Keep Track

View SL-8 DEB, 21212 on Celestrak

View SL-8 DEB, 21212 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, 21212

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-03-11T18:56:35.941Z)

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, 21212 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago