SL-14 R/B, 21785

Orbit data source: Space-Track

SL-14 R/B, 21785 is space debris in LEO originally from a launch on Tue, 12 Nov 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/21785?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21785, 1991-077G

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)

1991-11-12 (34 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: 11 hours ago

TLE from 11 hours ago

0 SL-14 R/B
1 21785U 91077G   25259.24877652  .00000007  00000-0 -21826-4 0  9992
2 21785  82.6020 178.1968 0037384 282.4815 246.5069 12.55088326550392

Epoch: 2025-09-16T05:58Z

TLE epoch observation values (Epoch: 2025-09-16T05:58:14.291Z)

Latitude

11.26365°

Longitude

-88.27906°

Altitude

1,457.004 km

Speed

7.129 km/s

True Right ascension

23h 46m 53s

True Declination

11° 12' 14"

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

09:55:19

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,469.843 km

Perigee altitude

1,411.384 km

Semi-major axis

7,818.751 km

Eccentricity

0.00374

Inclination

82.602°

RAAN

178.1968°

Arg. of periapsis

282.4815°

True anomaly

246.11475°

Mean anomaly

246.5069°

Eccentric anomaly

246.31075°

Mean motion

3.13933 °/min

Orbital period

114.67 mins

BSTAR

-0.000021826

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Other satellites on launch #77 in the year 1991 (1991-11-12 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.
15 mins	2025-09-16 18:33:10.809Z	154.375° SSE	2025-09-16 18:40:10.809Z	93.598° ESE	34.915°	2025-09-16 18:48:10.809Z	20.547° NNE
13 mins	2025-09-16 20:30:10.809Z	227.386° WSW	2025-09-16 20:36:10.809Z	286.569° WNW	32.099°	2025-09-16 20:43:10.809Z	350.478° N
9 mins	2025-09-17 04:40:10.809Z	30.224° NE	2025-09-17 04:44:10.809Z	61.467° ENE	17.814°	2025-09-17 04:49:10.809Z	100.137° ESE
15 mins	2025-09-17 06:34:10.809Z	352.146° N	2025-09-17 06:41:10.809Z	307.598° NW	44.986°	2025-09-17 06:49:10.809Z	175.662° S
8 mins	2025-09-17 08:32:10.809Z	309.167° NW	2025-09-17 08:35:10.809Z	286.473° WNW	15.888°	2025-09-17 08:40:10.809Z	249.468° W

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, 21785 on other resources

View SL-14 R/B, 21785 on Heavens-Above

View SL-14 R/B, 21785 on Keep Track

View SL-14 R/B, 21785 on Celestrak

View SL-14 R/B, 21785 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, 21785

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2025-09-16T05:58:14.291Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #77 in the year 1991 (1991-11-12 UTC)

SL-14 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-14 R/B, 21785 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 11 hours ago