SL-8 DEB, 56999

Orbit data source: Space-Track

SL-8 DEB, 56999 is space debris in LEO originally from a launch on Wed, 01 Nov 1972 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/56999?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

56999, 1972-087K

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

RVSN

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1972-11-01 (54 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

Medium (>0.1 m² and <1 m²)

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

TLE from 2 weeks ago

0 SL-8 DEB
1 56999U 72087K   26156.92946121  .00000019  00000-0  26080-3 0  9995
2 56999  74.0418   3.4603 0080530  87.9275 273.0987 12.35600625565657

Epoch: 2026-06-05T22:18Z

TLE epoch observation values (Epoch: 2026-06-05T22:18:25.448Z)

Latitude

-0.00005°

Longitude

134.50193°

Altitude

1,524.741 km

Speed

7.105 km/s

True Right ascension

00h 13m 50s

True Declination

0° 00' 00"

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

21:33:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,586.788 km

Perigee altitude

1,459.529 km

Semi-major axis

7,901.296 km

Eccentricity

0.00805

Inclination

74.0418°

RAAN

3.4603°

Arg. of periapsis

87.9275°

True anomaly

272.17678°

Mean anomaly

273.0987°

Eccentric anomaly

272.63779°

Mean motion

3.09026 °/min

Orbital period

116.49 mins

BSTAR

0.0002608

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Other satellites on launch #87 in the year 1972 (1972-11-01 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	2026-06-22 10:47:36.820Z	131.899° SE	2026-06-22 10:53:36.820Z	86.874° E	18.722°	2026-06-22 10:58:36.820Z	50.097° ENE
16 mins	2026-06-22 12:43:36.820Z	202.596° SW	2026-06-22 12:50:36.820Z	254.263° W	44.395°	2026-06-22 12:59:36.820Z	17.297° NNE
9 mins	2026-06-22 14:47:36.820Z	281.723° WNW	2026-06-22 14:51:36.820Z	313.266° NW	17.422°	2026-06-22 14:56:36.820Z	350.586° N
12 mins	2026-06-22 20:59:36.820Z	7.907° NNE	2026-06-22 21:04:36.820Z	49.455° ENE	24.094°	2026-06-22 21:11:36.820Z	105.815° ESE
16 mins	2026-06-22 22:57:36.820Z	335.897° NNW	2026-06-22 23:04:36.820Z	266.583° W	43.672°	2026-06-22 23:13:36.820Z	173.114° S
4 mins	2026-06-23 01:00:36.820Z	284.366° WNW	2026-06-23 01:02:36.820Z	270.424° WNW	11.859°	2026-06-23 01:04:36.820Z	256.865° W

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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, 56999 on other resources

View SL-8 DEB, 56999 on Heavens-Above

View SL-8 DEB, 56999 on Keep Track

View SL-8 DEB, 56999 on Celestrak

View SL-8 DEB, 56999 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, 56999

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 weeks ago

TLE from 2 weeks ago

TLE epoch observation values (Epoch: 2026-06-05T22:18:25.448Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #87 in the year 1972 (1972-11-01 UTC)

SL-8 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-8 DEB, 56999 on other resources

Documentation

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