SL-12 R/B(2), 18578

Orbit data source: Space-Track

SL-12 R/B(2), 18578 is space debris in GEO originally from a launch on Thu, 26 Nov 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/18578?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

18578, 1987-096D

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)

1987-11-26 (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 18578U 87096D   26171.11354345  .00000116  00000-0  00000-0 0  9990
2 18578  10.8134 326.1611 0022229 248.6790 128.2015  1.00570724138064

Epoch: 2026-06-20T02:43Z

TLE epoch observation values (Epoch: 2026-06-20T02:43:30.154Z)

Latitude

3.16153°

Longitude

33.73706°

Altitude

35,759.784 km

Speed

3.074 km/s

True Right ascension

22h 51m 46s

True Declination

3° 09' 30"

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

00:51:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,797.561 km

Perigee altitude

35,610.472 km

Semi-major axis

42,082.153 km

Eccentricity

0.00222

Inclination

10.8134°

RAAN

326.1611°

Arg. of periapsis

248.679°

True anomaly

128.40133°

Mean anomaly

128.2015°

Eccentric anomaly

128.30145°

Mean motion

0.25142 °/min

Orbital period

1,431.88 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #96 in the year 1987 (1987-11-26 UTC)

SL-12 PLAT, 18577 (Decayed)

SL-12 R/B(1), 18576 (Decayed)

COSMOS 1897, 18575

SL-12 R/B(AUX MOTOR), 18580 (Decayed)

COSMOS 1897 DEB, 44572

SL-12 R/B(AUX MOTOR), 18579 (Decayed)

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SL-12 R/B(2) Visibility

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18578 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), 18578 on other resources

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View SL-12 R/B(2), 18578 on Celestrak

View SL-12 R/B(2), 18578 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), 18578

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: 2026-06-20T02:43:30.154Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #96 in the year 1987 (1987-11-26 UTC)

SL-12 R/B(2) Visibility

18578 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 18578 on other resources

Documentation

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