SL-16 DEB, 25865

Orbit data source: Space-Track

SL-16 DEB, 25865 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/25865?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/25865?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

25865, 1999-039F

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: 12 hours ago

TLE from 12 hours ago

0 SL-16 DEB
1 25865U 99039F   26154.27492149  .00000674  00000-0  20093-3 0  9996
2 25865  97.8368  65.6959 0178616 126.9755 355.5253 14.36972097403949

Epoch: 2026-06-03T06:35Z

TLE epoch observation values (Epoch: 2026-06-03T06:35:53.216Z)

Latitude

56.92875°

Longitude

-92.87654°

Altitude

650.782 km

Speed

7.605 km/s

True Right ascension

17h 11m 19s

True Declination

56° 46' 08"

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

04:47:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

893.214 km

Perigee altitude

638.016 km

Semi-major axis

7,143.752 km

Eccentricity

0.01786

Inclination

97.8368°

RAAN

65.6959°

Arg. of periapsis

126.9755°

True anomaly

355.36198°

Mean anomaly

355.5253°

Eccentric anomaly

355.44401°

Mean motion

3.59463 °/min

Orbital period

100.15 mins

BSTAR

0.00020093

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

SL-16 DEB Visibility forecast

Loading observer location...
Set Observer location

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.
4 mins	2026-06-04 06:03:22.337Z	69.016° E	2026-06-04 06:04:22.337Z	87.109° E	19.617°	2026-06-04 06:07:22.337Z	136.727° SSE
6 mins	2026-06-04 07:41:22.337Z	341.151° N	2026-06-04 07:44:22.337Z	277.969° WNW	27.181°	2026-06-04 07:47:22.337Z	230.751° WSW
6 mins	2026-06-04 17:17:22.337Z	115.19° SE	2026-06-04 17:20:22.337Z	60.538° ENE	26.134°	2026-06-04 17:23:22.337Z	15.341° NNE

Items per page:

1–3 of 3 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

Check out SL-16 DEB, 25865 on other resources

View SL-16 DEB, 25865 on Heavens-Above

View SL-16 DEB, 25865 on Keep Track

View SL-16 DEB, 25865 on Celestrak

View SL-16 DEB, 25865 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, 25865

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-06-03T06:35:53.216Z)

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, 25865 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago