SL-12 R/B(2), 28139

Orbit data source: Space-Track

SL-12 R/B(2), 28139 is space debris in GEO originally from a launch on Sun, 28 Dec 2003 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/28139?theme=dark&initialShowStats=false

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Identifier

28139, 2003-060D

Orbit

GEO

Country

CIS

Related business

Khrunichev State Research and Production Space Center (RU)

Manufacturer

RKKE

Mission

Spacecraft

Bus & Motor

BLOK DM2, Unknown motor

Mass

2,560 kg wet, 2,560 kg dry

Launch date (UTC)

2003-12-28 (22 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 1 Nozzle, 3.1 m

Radar Cross Section

23.684 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 28139U 03060D   25304.76802385 -.00000029  00000-0  00000-0 0  9997
2 28139  13.3684  15.4100 0019834 226.4054 144.0007  1.00220002 79749

Epoch: 2025-10-31T18:25Z

TLE epoch observation values (Epoch: 2025-10-31T18:25:57.260Z)

Latitude

2.427°

Longitude

68.84172°

Altitude

35,868.446 km

Speed

3.069 km/s

True Right ascension

01h 42m 33s

True Declination

2° 25' 28"

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

08:55:26

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,885.764 km

Perigee altitude

35,718.444 km

Semi-major axis

42,180.241 km

Eccentricity

0.00198

Inclination

13.3684°

RAAN

15.41°

Arg. of periapsis

226.4054°

True anomaly

144.13402°

Mean anomaly

144.0007°

Eccentric anomaly

144.06739°

Mean motion

0.25054 °/min

Orbital period

1,436.89 mins

BSTAR

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Other satellites on launch #60 in the year 2003 (2003-12-28 UTC)

SL-12 R/B(1), 28135 (Decayed)

SL-12 PLAT, 28136 (Decayed)

SESAT 2 (EXPRESS AM-22), 28134

SL-12 R/B(AUX MOTOR), 28199 (Decayed)

SL-12 R/B(AUX MOTOR), 28198 (Decayed)

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SL-12 R/B(2) Visibility

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28139 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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Check out SL-12 R/B(2), 28139 on other resources

View SL-12 R/B(2), 28139 on Heavens-Above

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View SL-12 R/B(2), 28139 on Celestrak

View SL-12 R/B(2), 28139 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), 28139

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: 2025-10-31T18:25:57.260Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #60 in the year 2003 (2003-12-28 UTC)

SL-12 R/B(2) Visibility

28139 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 28139 on other resources

Documentation

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