SL-12 R/B(2), 15581

Orbit data source: Space-Track

SL-12 R/B(2), 15581 is space debris in GEO originally from a launch on Thu, 21 Feb 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/15581?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

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ISO8601 Format

Identifier

15581, 1985-016F

Orbit

GEO

Last TLE update

8 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)

1985-02-21 (40 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 8 hours ago

0 SL-12 R/B(2)
1 15581U 85016F   25186.81169312 -.00000302  00000-0  00000+0 0  9998
2 15581  10.2621 318.5338 0025762 244.5001 145.1803  0.99408015118483

Epoch: 2025-07-05T19:28Z

TLE epoch observation values (Epoch: 2025-07-05T19:28:50.285Z)

Latitude

5.08808°

Longitude

131.70689°

Altitude

36,118.775 km

Speed

3.059 km/s

True Right ascension

23h 11m 50s

True Declination

5° 04' 59"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

6.23441°

Longitude

-114.6836°

Altitude

36,051.968 km

Speed

3.064 km/s

Apparent Right ascension

06h 25m 33s

Apparent Declination

0° 40' 35"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

15:01:20

Azimuth

297.937° NW

Elevation

-28.329°

Doppler factor

Orbital elements

Apogee altitude

36,140.764 km

Perigee altitude

35,922.252 km

Semi-major axis

42,409.645 km

Eccentricity

0.00258

Inclination

10.2621°

RAAN

318.5338°

Arg. of periapsis

244.5001°

True anomaly

Unknown

Mean anomaly

145.1803°

Eccentric anomaly

Unknown

Mean motion

0.24851 °/min

Orbital period

1,448.63 mins

BSTAR

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15581 neighbors

Authenticating...

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Other satellites on launch #16 in the year 1985 (1985-02-21 UTC)

COSMOS 1629, 15574

SL-12 R/B(1), 15575 (Decayed)

SL-12 PLAT, 15576 (Decayed)

SL-12 R/B(AUX MOTOR), 15577 (Decayed)

SL-12 R/B(AUX MOTOR), 15578 (Decayed)

SL-12 R/B(2) Visibility

Observer location: undefined°, undefined°

SL-12 R/B(2) is likely not visible in the next few days

Authenticating...

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Check out SL-12 R/B(2), 15581 on other resources

View SL-12 R/B(2), 15581 on Heavens-Above

View SL-12 R/B(2), 15581 on Keep Track

View SL-12 R/B(2), 15581 on Celestrak

View SL-12 R/B(2), 15581 on Gunter's Space Page

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