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.

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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 (38 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   26071.12985091 -.00000282  00000-0  00000-0 0  9993
2 18578  10.9520 326.7959 0022007 249.1574 289.6867  1.00573387137058

Epoch: 2026-03-12T03:06Z

TLE epoch observation values (Epoch: 2026-03-12T03:06:59.118Z)

Latitude

0.26191°

Longitude

-71.06706°

Altitude

35,670.344 km

Speed

3.08 km/s

True Right ascension

09h 41m 51s

True Declination

0° 15' 42"

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

22:36:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,795.881 km

Perigee altitude

35,610.664 km

Semi-major axis

42,081.409 km

Eccentricity

0.0022

Inclination

10.952°

RAAN

326.7959°

Arg. of periapsis

249.1574°

True anomaly

289.44904°

Mean anomaly

289.6867°

Eccentric anomaly

289.56789°

Mean motion

0.25142 °/min

Orbital period

1,431.84 mins

BSTAR

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

COSMOS 1897, 18575

SL-12 PLAT, 18577 (Decayed)

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

COSMOS 1897 DEB, 44572

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

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

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SL-12 R/B(2) 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.
1440 mins	2026-03-13 18:11:00.960Z	125.283° SE	2026-03-13 20:41:00.960Z	122.279° SE	32.919°	2026-03-14 18:11:00.960Z	123.892° SE

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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

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

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

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: 2026-03-12T03:06:59.118Z)

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 forecast

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