SL-12 R/B(2), 18634

Orbit data source: Space-Track

SL-12 R/B(2), 18634 is space debris in GEO originally from a launch on Thu, 10 Dec 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/18634?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

18634, 1987-100D

Orbit

GEO

Last TLE update

15 hours ago

Origin

Russian Strategic Rocket Forces (CIS)

Manufacturer

NPO Energiya

Mission

Spacecraft

Bus & Motor

BLOK DM, Unknown motor

Mass

2,440 kg wet, 2,440 kg dry

Launch date (UTC)

1987-12-10 (38 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 6.27 m

Radar Cross Section

23.597 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 15 hours ago

0 SL-12 R/B(2)
1 18634U 87100D   25186.53622058 -.00000084  00000-0  00000-0 0  9994
2 18634  10.2805 322.2046 0016717 256.7375 113.7268  1.03401069141891

Epoch: 2025-07-05T12:52Z

TLE epoch observation values (Epoch: 2025-07-05T12:52:09.458Z)

Latitude

1.88198°

Longitude

-144.15695°

Altitude

34,958.397 km

Speed

3.104 km/s

True Right ascension

22h 10m 37s

True Declination

1° 52' 48"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-9.40336°

Longitude

91.06558°

Altitude

34,865.09 km

Speed

3.111 km/s

Apparent Right ascension

13h 35m 07s

Apparent Declination

-16° 25' 33"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

16:00:42

Azimuth

218.624° SW

Elevation

24.252°

Doppler factor

Orbital elements

Apogee altitude

35,001.642 km

Perigee altitude

34,863.524 km

Semi-major axis

41,310.72 km

Eccentricity

0.00167

Inclination

10.2805°

RAAN

322.2046°

Arg. of periapsis

256.7375°

True anomaly

Unknown

Mean anomaly

113.7268°

Eccentric anomaly

Unknown

Mean motion

0.25849 °/min

Orbital period

1,392.69 mins

BSTAR

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18634 neighbors

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Other satellites on launch #100 in the year 1987 (1987-12-10 UTC)

RADUGA 21, 18631

SL-12 R/B(1), 18632 (Decayed)

SL-12 PLAT, 18633 (Decayed)

SL-12 R/B(AUX MOTOR), 18635 (Decayed)

SL-12 R/B(AUX MOTOR), 18636 (Decayed)

SL-12 DEB *, 21620 (Decayed)

SL-12 R/B(2) Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-06 04:03:35.239Z	218.613° SW	2025-07-06 17:48:35.239Z	224.124° SW	36.006°	2025-07-07 04:03:35.239Z	205.797° SW

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Check out SL-12 R/B(2), 18634 on other resources

View SL-12 R/B(2), 18634 on Heavens-Above

View SL-12 R/B(2), 18634 on Keep Track

View SL-12 R/B(2), 18634 on Celestrak

View SL-12 R/B(2), 18634 on Gunter's Space Page

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