SL-12 R/B(2), 25927

Orbit data source: Space-Track

SL-12 R/B(2), 25927 is space debris in HEO originally from a launch on Sun, 26 Sep 1999 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/25927?theme=dark&initialShowStats=false

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Identifier

25927, 1999-053D

Orbit

HEO

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)

1999-09-26 (26 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: 1 day ago

TLE from 1 day ago

0 SL-12 R/B(2)
1 25927U 99053D   25287.39183064 -.00000163  00000-0  00000-0 0  9990
2 25927  17.7950 340.0649 5328723 231.7104 178.4304  1.89349857179772

Epoch: 2025-10-14T09:24Z

TLE epoch observation values (Epoch: 2025-10-14T09:24:14.167Z)

Latitude

13.77186°

Longitude

-134.43982°

Altitude

35,946.636 km

Speed

2.096 km/s

True Right ascension

01h 59m 12s

True Declination

13° 45' 31"

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

05:51:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,930.958 km

Perigee altitude

6,515.142 km

Semi-major axis

27,601.187 km

Eccentricity

0.53287

Inclination

17.795°

RAAN

340.0649°

Arg. of periapsis

231.7104°

True anomaly

179.43472°

Mean anomaly

178.4304°

Eccentric anomaly

178.97602°

Mean motion

0.47332 °/min

Orbital period

760.59 mins

BSTAR

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Computing Atmospheric mass density...

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Other satellites on launch #53 in the year 1999 (1999-09-26 UTC)

ABS 6 (LMI 1), 25924

SL-12 R/B(1), 25925 (Decayed)

SL-12 PLAT, 25926 (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.
342 mins	2025-10-15 11:15:14.004Z	256.906° W	2025-10-15 16:16:14.004Z	224.368° SW	27.446°	2025-10-15 16:57:14.004Z	159.191° S
173 mins	2025-10-16 08:22:14.004Z	251.97° W	2025-10-16 10:14:14.004Z	259.741° W	16.526°	2025-10-16 11:15:14.004Z	265.031° W

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), 25927 on other resources

View SL-12 R/B(2), 25927 on Heavens-Above

View SL-12 R/B(2), 25927 on Keep Track

View SL-12 R/B(2), 25927 on Celestrak

View SL-12 R/B(2), 25927 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), 25927

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: 2025-10-14T09:24:14.167Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #53 in the year 1999 (1999-09-26 UTC)

SL-12 R/B(2) Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 25927 on other resources

Documentation

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