SL-3 DEB, 25255

Orbit data source: Space-Track

SL-3 DEB, 25255 is space debris in LEO originally from a launch on Thu, 14 May 1981 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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/25255?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/25255?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

25255, 1981-043D

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1981-05-14 (45 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

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-3 DEB
1 25255U 81043D   26314.23322419  .00000066  00000-0  30656-4 0  9993
2 25255  81.2970  39.0639 0045594 173.2020 216.6335 14.08687374542555

Epoch: 2026-11-10T05:35Z

TLE epoch observation values (Epoch: 2026-11-10T05:35:50.570Z)

Latitude

29.2°

Longitude

-89.41328°

Altitude

894.033 km

Speed

7.394 km/s

True Right ascension

02h 55m 46s

True Declination

29° 03' 23"

Sunlit

Object was in full shadow 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

14:00:52

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

894.047 km

Perigee altitude

828.034 km

Semi-major axis

7,239.177 km

Eccentricity

0.00456

Inclination

81.297°

RAAN

39.0639°

Arg. of periapsis

173.202°

True anomaly

216.32317°

Mean anomaly

216.6335°

Eccentric anomaly

216.47819°

Mean motion

3.52378 °/min

Orbital period

102.16 mins

BSTAR

0.000030656

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #43 in the year 1981 (1981-05-14 UTC)

METEOR 2-7 DEB, 28389

SL-3 R/B, 12457

METEOR 2-7, 12456

METEOR 2-7 DEB, 28601 (Decayed)

METEOR 2-7 DEB, 38288

METEOR 2-7 DEB, 43300

METEOR 2-7 DEB, 101260

METEOR 2-7 DEB, 101261

METEOR 2-7 DEB, 101262

METEOR 2-7 DEB, 43302

METEOR 2-7 DEB, 45515

METEOR 2-7 DEB, 36878

METEOR 2-7 DEB, 43301

METEOR 2-7 DEB, 101263

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-3 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.
10 mins	2026-11-10 17:57:45.708Z	344.123° N	2026-11-10 18:02:45.708Z	288.661° WNW	61.257°	2026-11-10 18:07:45.708Z	186.371° SSW
7 mins	2026-11-11 05:27:45.708Z	124.698° SE	2026-11-11 05:30:45.708Z	86.058° E	22.459°	2026-11-11 05:34:45.708Z	40.004° NE
9 mins	2026-11-11 07:09:45.708Z	218.488° SW	2026-11-11 07:13:45.708Z	291.882° WNW	46.724°	2026-11-11 07:18:45.708Z	356.363° N
4 mins	2026-11-11 16:09:45.708Z	46.441° ENE	2026-11-11 16:11:45.708Z	71.366° E	15.997°	2026-11-11 16:13:45.708Z	94.938° ESE

Items per page:

1–4 of 4 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

Authenticating...

Click to sort rows by Event ID header in ascending order	Click to sort rows by Pc header in ascending order	Click to sort rows by Md header in ascending order	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 TCA header in descending order

Check out SL-3 DEB, 25255 on other resources

View SL-3 DEB, 25255 on Heavens-Above

View SL-3 DEB, 25255 on Keep Track

View SL-3 DEB, 25255 on Celestrak

View SL-3 DEB, 25255 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-3 DEB, 25255

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: 2026-11-10T05:35:50.570Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #43 in the year 1981 (1981-05-14 UTC)

SL-3 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-3 DEB, 25255 on other resources

Documentation

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