SL-12 R/B(AUX MOTOR), 21220

Orbit data source: Space-Track

SL-12 R/B(AUX MOTOR), 21220 is space debris in HEO originally from a launch on Thu, 04 Apr 1991 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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/21220?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21220, 1991-025F

Orbit

HEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

NPO Energiya

Mission

Spacecraft

Bus & Motor

SOZ, Unknown motor

Mass

Wet unknown, ~60 kg dry

Launch date (UTC)

1991-04-04 (35 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.6 m

Radar Cross Section

0.660 m², Large (>1 m²)

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

TLE from 2 days ago

0 SL-12 R/B(AUX MOTOR)
1 21220U 91025F   26171.29951416  .00000047  00000-0  30758-3 0  9995
2 21220  65.1125 233.1429 5506926 116.8381 308.9508  4.44046146551001

Epoch: 2026-06-20T07:11Z

TLE epoch observation values (Epoch: 2026-06-20T07:11:18.023Z)

Latitude

-0.00003°

Longitude

-143.19539°

Altitude

8,114.546 km

Speed

5.433 km/s

True Right ascension

15h 32m 34s

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

23:09:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

17,866.232 km

Perigee altitude

646.579 km

Semi-major axis

15,634.543 km

Eccentricity

0.55069

Inclination

65.1125°

RAAN

233.1429°

Arg. of periapsis

116.8381°

True anomaly

243.24597°

Mean anomaly

308.9508°

Eccentric anomaly

277.68158°

Mean motion

1.11024 °/min

Orbital period

324.26 mins

BSTAR

0.00030758

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Other satellites on launch #25 in the year 1991 (1991-04-04 UTC)

SL-12 DEB, 34804 (Decayed)

SL-12 DEB, 34805 (Decayed)

SL-12 DEB, 34801

SL-12 DEB, 35056

SL-12 DEB, 35313 (Decayed)

SL-12 DEB *, 35314

SL-12 DEB, 34666 (Decayed)

SL-12 DEB, 47344 (Decayed)

SL-12 DEB, 34935 (Decayed)

SL-12 DEB, 35309 (Decayed)

SL-12 R/B(2), 21221

COSMOS 2141 (GLONASS), 21218

SL-12 DEB, 34660 (Decayed)

SL-12 DEB, 34798 (Decayed)

SL-12 DEB, 35057 (Decayed)

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SL-12 R/B(AUX MOTOR) 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.
8 mins	2026-06-22 13:59:56.570Z	349.605° N	2026-06-22 14:02:56.570Z	49.791° ENE	28.577°	2026-06-22 14:07:56.570Z	120.716° SE
55 mins	2026-06-23 05:06:56.570Z	201.093° SSW	2026-06-23 05:53:56.570Z	203.791° SW	44.999°	2026-06-23 06:01:56.570Z	31.648° 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-12 R/B(AUX MOTOR), 21220 on other resources

View SL-12 R/B(AUX MOTOR), 21220 on Heavens-Above

View SL-12 R/B(AUX MOTOR), 21220 on Keep Track

View SL-12 R/B(AUX MOTOR), 21220 on Celestrak

View SL-12 R/B(AUX MOTOR), 21220 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-12 R/B(AUX MOTOR), 21220

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: 2026-06-20T07:11:18.023Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #25 in the year 1991 (1991-04-04 UTC)

SL-12 R/B(AUX MOTOR) Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(AUX MOTOR), 21220 on other resources

Documentation

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