SL-12 R/B(2), 18446

Orbit data source: Space-Track

SL-12 R/B(2), 18446 is space debris in GEO originally from a launch on Wed, 28 Oct 1987 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.

Not visible in the next 10 days

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Iframe URL

https://www.satcat.com/sats-embedded/18446?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

18446, 1987-091D

Orbit

GEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

NPO Energiya

Mission

Spacecraft

Bus & Motor

BLOK DM, Unknown motor

Mass

2,440 kg wet, 2,440 kg dry

Launch date (UTC)

1987-10-28 (39 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 3.1 m

Radar Cross Section

23.597 m², Large (>1 m²)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 SL-12 R/B(2)
1 18446U 87091D   26251.00707122 -.00000273  00000-0  00000-0 0  9996
2 18446  10.6734 325.2027 0023310 267.9558 211.7270  1.00151362130832

Epoch: 2026-09-08T00:10Z

TLE epoch observation values (Epoch: 2026-09-08T00:10:10.953Z)

Latitude

9.27184°

Longitude

95.56847°

Altitude

35,902.468 km

Speed

3.068 km/s

True Right ascension

05h 40m 46s

True Declination

9° 15' 46"

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

07:53:35

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,919.771 km

Perigee altitude

35,723.036 km

Semi-major axis

42,199.541 km

Eccentricity

0.00233

Inclination

10.6734°

RAAN

325.2027°

Arg. of periapsis

267.9558°

True anomaly

211.58688°

Mean anomaly

211.727°

Eccentric anomaly

211.65691°

Mean motion

0.25037 °/min

Orbital period

1,437.87 mins

BSTAR

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Other satellites on launch #91 in the year 1987 (1987-10-28 UTC)

COSMOS 1894, 18443

SL-12 PLAT, 18445 (Decayed)

SL-12 R/B(1), 18444 (Decayed)

SL-12 R/B(AUX MOTOR), 18448 (Decayed)

SL-12 R/B(AUX MOTOR), 18447 (Decayed)

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SL-12 R/B(2) Visibility

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18446 neighbors

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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(2), 18446 on other resources

View SL-12 R/B(2), 18446 on Heavens-Above

View SL-12 R/B(2), 18446 on Keep Track

View SL-12 R/B(2), 18446 on Celestrak

View SL-12 R/B(2), 18446 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(2), 18446

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: 2026-09-08T00:10:10.953Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #91 in the year 1987 (1987-10-28 UTC)

SL-12 R/B(2) Visibility

18446 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 18446 on other resources

Documentation

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