SL-8 DEB, 21724

Orbit data source: Space-Track

SL-8 DEB, 21724 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/21724?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21724, 1991-009BZ

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: 1 day ago

TLE from 1 day ago

0 SL-8 DEB
1 21724U 91009BZ  26070.16555939  .00000050  00000-0  57060-3 0  9999
2 21724  73.9758 238.6369 0207153 120.2007 358.1981 12.20608013534666

Epoch: 2026-03-11T03:58Z

TLE epoch observation values (Epoch: 2026-03-11T03:58:24.331Z)

Latitude

57.88787°

Longitude

163.11373°

Altitude

1,434.246 km

Speed

7.223 km/s

True Right ascension

02h 06m 11s

True Declination

57° 44' 47"

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

09:01:00

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,752.782 km

Perigee altitude

1,422.75 km

Semi-major axis

7,965.903 km

Eccentricity

0.02072

Inclination

73.9758°

RAAN

238.6369°

Arg. of periapsis

120.2007°

True anomaly

358.12148°

Mean anomaly

358.1981°

Eccentric anomaly

358.15999°

Mean motion

3.05275 °/min

Orbital period

117.93 mins

BSTAR

0.0005706

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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.
14 mins	2026-03-12 10:54:04.549Z	150.291° SSE	2026-03-12 11:01:04.549Z	96.946° ESE	27.543°	2026-03-12 11:08:04.549Z	40.397° NE
16 mins	2026-03-12 12:53:04.549Z	217.609° SW	2026-03-12 13:01:04.549Z	292.64° NW	40.325°	2026-03-12 13:09:04.549Z	11.017° NNE
6 mins	2026-03-12 15:01:04.549Z	299.312° NW	2026-03-12 15:04:04.549Z	320.301° NNW	12.586°	2026-03-12 15:07:04.549Z	341.207° N
14 mins	2026-03-12 21:15:04.549Z	359.721° N	2026-03-12 21:21:04.549Z	58.451° ENE	32.229°	2026-03-12 21:29:04.549Z	127.719° SE
14 mins	2026-03-12 23:15:04.549Z	325.091° NNW	2026-03-12 23:22:04.549Z	252.659° W	34.947°	2026-03-12 23:29:04.549Z	193.52° SSW

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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, 21724 on other resources

View SL-8 DEB, 21724 on Heavens-Above

View SL-8 DEB, 21724 on Keep Track

View SL-8 DEB, 21724 on Celestrak

View SL-8 DEB, 21724 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, 21724

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-03-11T03:58:24.331Z)

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, 21724 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago