SL-16 DEB, 25863

Orbit data source: Space-Track

SL-16 DEB, 25863 is space debris in SSO originally from a launch on Sat, 17 Jul 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/25863?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

25863, 1999-039D

Orbit

SSO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Yuzhnoe

Mission

Spacecraft

Bus & Motor

SEP MOTOR COVER, Unknown motor

Mass

~0 kg wet, ~1 kg dry

Launch date (UTC)

1999-07-17 (27 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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 SL-16 DEB
1 25863U 99039D   26154.16441809  .00000568  00000-0  15020-3 0  9995
2 25863  98.3649 224.9734 0145959 244.6425 169.2255 14.46752571413073

Epoch: 2026-06-03T03:56Z

TLE epoch observation values (Epoch: 2026-06-03T03:56:45.722Z)

Latitude

53.43916°

Longitude

-97.21915°

Altitude

847.097 km

Speed

7.381 km/s

True Right ascension

14h 14m 23s

True Declination

53° 16' 35"

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

04:48:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

837.179 km

Perigee altitude

629.581 km

Semi-major axis

7,111.517 km

Eccentricity

0.0146

Inclination

98.3649°

RAAN

224.9734°

Arg. of periapsis

244.6425°

True anomaly

169.53267°

Mean anomaly

169.2255°

Eccentric anomaly

169.37963°

Mean motion

3.61909 °/min

Orbital period

99.47 mins

BSTAR

0.0001502

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Other satellites on launch #39 in the year 1999 (1999-07-17 UTC)

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SL-16 DEB 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.
9 mins	2026-06-04 04:43:02.603Z	166.536° S	2026-06-04 04:47:02.603Z	335.935° NNW	44.595°	2026-06-04 04:52:02.603Z	346.575° N
8 mins	2026-06-04 16:48:02.603Z	35.733° NE	2026-06-04 16:52:02.603Z	88.31° E	25.847°	2026-06-04 16:56:02.603Z	151.687° SSE
6 mins	2026-06-04 18:28:02.603Z	339.157° N	2026-06-04 18:31:02.603Z	284.628° WNW	26.994°	2026-06-04 18:34:02.603Z	238.391° WSW

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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-16 DEB, 25863 on other resources

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View SL-16 DEB, 25863 on Celestrak

View SL-16 DEB, 25863 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-16 DEB, 25863

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-06-03T03:56:45.722Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #39 in the year 1999 (1999-07-17 UTC)

SL-16 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-16 DEB, 25863 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago