SL-8 DEB, 21169

Orbit data source: Space-Track

SL-8 DEB, 21169 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/21169?theme=dark&initialShowStats=false

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Identifier

21169, 1991-009AG

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, 0.4 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 SL-8 DEB
1 21169U 91009AG  26171.43879420 -.00000001  00000-0  12772-3 0  9996
2 21169  73.9973  51.5943 0132096 233.9112 300.8960 12.22907662575525

Epoch: 2026-06-20T10:31Z

TLE epoch observation values (Epoch: 2026-06-20T10:31:51.818Z)

Latitude

6.18449°

Longitude

163.20278°

Altitude

1,528.708 km

Speed

7.126 km/s

True Right ascension

15h 19m 17s

True Declination

6° 09' 05"

Sunlit

Object was in full shadow 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

03:45:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,682.865 km

Perigee altitude

1,472.676 km

Semi-major axis

7,955.908 km

Eccentricity

0.01321

Inclination

73.9973°

RAAN

51.5943°

Arg. of periapsis

233.9112°

True anomaly

299.5861°

Mean anomaly

300.896°

Eccentric anomaly

300.24215°

Mean motion

3.0585 °/min

Orbital period

117.7 mins

BSTAR

0.00012772

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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 16:42:25.532Z	173.796° S	2026-06-22 16:46:25.532Z	88.045° E	43.445°	2026-06-22 16:55:25.532Z	23.226° NE
14 mins	2026-06-22 18:40:25.532Z	253.907° W	2026-06-22 18:47:25.532Z	308.418° NW	26.583°	2026-06-22 18:54:25.532Z	359.95° N
11 mins	2026-06-23 01:00:25.532Z	10.283° NNE	2026-06-23 01:05:25.532Z	46.996° ENE	19.915°	2026-06-23 01:11:25.532Z	90.602° ESE
16 mins	2026-06-23 02:59:25.532Z	342.227° N	2026-06-23 03:07:25.532Z	87.646° E	44.894°	2026-06-23 03:15:25.532Z	160.543° S
10 mins	2026-06-23 05:01:25.532Z	305.641° NW	2026-06-23 05:06:25.532Z	269.439° W	18.421°	2026-06-23 05:11:25.532Z	233.647° WSW
17 mins	2026-06-23 16:11:25.532Z	173.924° S	2026-06-23 16:19:25.532Z	98.023° ESE	40.351°	2026-06-23 16:28:25.532Z	26.785° NE

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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, 21169 on other resources

View SL-8 DEB, 21169 on Heavens-Above

View SL-8 DEB, 21169 on Keep Track

View SL-8 DEB, 21169 on Celestrak

View SL-8 DEB, 21169 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, 21169

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: 2026-06-20T10:31:51.818Z)

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, 21169 on other resources

Documentation

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