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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ISO8601 Format

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   25257.12994378 -.00000165  00000-0  00000-0 0  9998
2 25927  17.8028 343.3436 5327688 225.4711  70.3357  1.89350157179191

Epoch: 2025-09-14T03:07Z

TLE epoch observation values (Epoch: 2025-09-14T03:07:07.142Z)

Latitude

-1.21193°

Longitude

-60.5546°

Altitude

23,902.766 km

Speed

3.447 km/s

True Right ascension

22h 38m 18s

True Declination

-1° 12' 37"

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

23:30:51

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,928.055 km

Perigee altitude

6,517.985 km

Semi-major axis

27,601.157 km

Eccentricity

0.53277

Inclination

17.8028°

RAAN

343.3436°

Arg. of periapsis

225.4711°

True anomaly

130.56642°

Mean anomaly

70.3357°

Eccentric anomaly

100.36315°

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.
428 mins	2025-09-15 06:53:21.702Z	144.922° SSE	2025-09-15 11:23:21.702Z	170.805° S	41.609°	2025-09-15 14:01:21.702Z	115.898° SE
157 mins	2025-09-16 04:16:21.702Z	207.284° SW	2025-09-16 06:53:21.702Z	174.992° S	36.376°	2025-09-16 06:53:21.702Z	174.992° S

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: 2025-09-14T03:07:07.142Z)

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