SL-14 R/B, 21656

Orbit data source: Space-Track

SL-14 R/B, 21656 is space debris in LEO originally from a launch on Thu, 15 Aug 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/21656?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21656, 1991-056B

Orbit

LEO

Country

CIS

Related business

Russian Space Forces (RU)

Manufacturer

Yuzhnoe

Mission

Spacecraft

Bus & Motor

S5M, Unknown motor

Mass

1,600 kg wet, 1,600 kg dry

Launch date (UTC)

1991-08-15 (35 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 1.4 m

Radar Cross Section

7.351 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 5 days ago

TLE from 5 days ago

0 SL-14 R/B
1 21656U 91056B   26155.08198171  .00000020  00000-0  18072-4 0  9999
2 21656  82.5455 137.1844 0025947 102.0432 331.4862 13.20282355673686

Epoch: 2026-06-04T01:58Z

TLE epoch observation values (Epoch: 2026-06-04T01:58:03.219Z)

Latitude

71.90213°

Longitude

-121.38611°

Altitude

1,178.798 km

Speed

7.279 km/s

True Right ascension

10h 42m 38s

True Declination

71° 48' 22"

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

19:22:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,200.495 km

Perigee altitude

1,161.269 km

Semi-major axis

7,559.019 km

Eccentricity

0.00259

Inclination

82.5455°

RAAN

137.1844°

Arg. of periapsis

102.0432°

True anomaly

331.34386°

Mean anomaly

331.4862°

Eccentric anomaly

331.41507°

Mean motion

3.30252 °/min

Orbital period

109.01 mins

BSTAR

0.000018072

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Other satellites on launch #56 in the year 1991 (1991-08-15 UTC)

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SL-14 R/B 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	2026-06-09 09:30:02.739Z	5.228° NNE	2026-06-09 09:36:02.739Z	68.402° E	36.135°	2026-06-09 09:43:02.739Z	148.977° SSE
9 mins	2026-06-09 11:22:02.739Z	319.663° NNW	2026-06-09 11:26:02.739Z	273.844° WNW	26.303°	2026-06-09 11:31:02.739Z	222.376° SW
10 mins	2026-06-09 21:46:02.739Z	132.135° SE	2026-06-09 21:51:02.739Z	79.44° E	24.352°	2026-06-09 21:56:02.739Z	32.605° NE
12 mins	2026-06-09 23:35:02.739Z	212.953° SW	2026-06-09 23:40:02.739Z	278.881° WNW	38.037°	2026-06-09 23:47:02.739Z	357.742° 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-14 R/B, 21656 on other resources

View SL-14 R/B, 21656 on Heavens-Above

View SL-14 R/B, 21656 on Keep Track

View SL-14 R/B, 21656 on Celestrak

View SL-14 R/B, 21656 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-14 R/B, 21656

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 days ago

TLE from 5 days ago

TLE epoch observation values (Epoch: 2026-06-04T01:58:03.219Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #56 in the year 1991 (1991-08-15 UTC)

SL-14 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-14 R/B, 21656 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 5 days ago