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 (27 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 1 Nozzle, 3.2 m

Radar Cross Section

23.684 m², Large (>1 m²)

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Last TLE update: 3 days ago

TLE from 3 days ago

0 SL-12 R/B(2)
1 25927U 99053D   26251.33786706 -.00000036  00000-0  00000-0 0  9997
2 25927  17.5557 304.6147 5334095 299.1606 123.9879  1.89348292186004

Epoch: 2026-09-08T08:06Z

TLE epoch observation values (Epoch: 2026-09-08T08:06:31.713Z)

Latitude

17.38597°

Longitude

-66.11135°

Altitude

32,878.779 km

Speed

2.422 km/s

True Right ascension

02h 51m 42s

True Declination

17° 22' 06"

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

13:49:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,946.037 km

Perigee altitude

6,500.391 km

Semi-major axis

27,601.351 km

Eccentricity

0.53341

Inclination

17.5557°

RAAN

304.6147°

Arg. of periapsis

299.1606°

True anomaly

158.82725°

Mean anomaly

123.9879°

Eccentric anomaly

142.56529°

Mean motion

0.47331 °/min

Orbital period

760.6 mins

BSTAR

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

ABS 6 (LMI 1), 25924

SL-12 PLAT, 25926 (Decayed)

SL-12 R/B(1), 25925 (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.
671 mins	2026-09-11 08:42:03.307Z	249.376° W	2026-09-11 11:33:03.307Z	228.959° WSW	54.042°	2026-09-11 19:53:03.307Z	177.457° S

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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), 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: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-09-08T08:06:31.713Z)

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: 3 days ago