SL-12 R/B(2), 15963

Orbit data source: Space-Track

SL-12 R/B(2), 15963 is space debris in GEO originally from a launch on Thu, 08 Aug 1985 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/15963?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

15963, 1985-070F

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)

1985-08-08 (41 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 SL-12 R/B(2)
1 15963U 85070F   26082.77567902 -.00000074  00000-0  00000-0 0  9997
2 15963  10.9307 321.6599 0009396 181.9735 359.5840  0.97803611118742

Epoch: 2026-03-23T18:36Z

TLE epoch observation values (Epoch: 2026-03-23T18:36:58.667Z)

Latitude

-0.30781°

Longitude

42.7165°

Altitude

36,452.289 km

Speed

3.052 km/s

True Right ascension

09h 32m 53s

True Declination

0° 18' 27"

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

03:05:08

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

36,534.305 km

Perigee altitude

36,453.74 km

Semi-major axis

42,872.16 km

Eccentricity

0.00094

Inclination

10.9307°

RAAN

321.6599°

Arg. of periapsis

181.9735°

True anomaly

359.58322°

Mean anomaly

359.584°

Eccentric anomaly

359.58361°

Mean motion

0.2445 °/min

Orbital period

1,472.39 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #70 in the year 1985 (1985-08-08 UTC)

RADUGA 16, 15946

SL-12 R/B(AUX MOTOR), 15957 (Decayed)

SL-12 PLAT, 15948 (Decayed)

SL-12 R/B(AUX MOTOR), 15956 (Decayed)

SL-12 R/B(1), 15947 (Decayed)

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SL-12 R/B(2) Visibility

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15963 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), 15963 on other resources

View SL-12 R/B(2), 15963 on Heavens-Above

View SL-12 R/B(2), 15963 on Keep Track

View SL-12 R/B(2), 15963 on Celestrak

View SL-12 R/B(2), 15963 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), 15963

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-03-23T18:36:58.667Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #70 in the year 1985 (1985-08-08 UTC)

SL-12 R/B(2) Visibility

15963 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 15963 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago