**SL-8 DEB *, 3931**

Orbit data source: Space-Track

SL-8 DEB *, 3931 is space debris in LEO originally from a launch on Mon, 15 Mar 1965 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/3931?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/3931?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

3931, 1965-020EV

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1965-03-15 (61 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

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: 21 hours ago

TLE from 21 hours ago

0 SL-8 DEB *
1 03931U 65020EV  26178.30910020 -.00000090  00000-0  19249-4 0  9997
2 03931  56.0588 195.5666 0192720  97.8675 282.1207 12.35214953778415

Epoch: 2026-06-27T07:25Z

TLE epoch observation values (Epoch: 2026-06-27T07:25:06.257Z)

Latitude

14.71163°

Longitude

178.99318°

Altitude

1,498.136 km

Speed

7.13 km/s

True Right ascension

13h 42m 46s

True Declination

14° 38' 07"

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

16:18:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,679.121 km

Perigee altitude

1,374.434 km

Semi-major axis

7,904.914 km

Eccentricity

0.01927

Inclination

56.0588°

RAAN

195.5666°

Arg. of periapsis

97.8675°

True anomaly

279.95107°

Mean anomaly

282.1207°

Eccentric anomaly

281.03692°

Mean motion

3.08814 °/min

Orbital period

116.57 mins

BSTAR

0.000019249

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #20 in the year 1965 (1965-03-15 UTC)

SL-8 DEB, 1566 (Decayed)

SL-8 DEB, 1482 (Decayed)

SL-8 DEB, 1487 (Decayed)

SL-8 DEB, 1553 (Decayed)

SL-8 DEB, 1401 (Decayed)

SL-8 DEB, 1532 (Decayed)

SL-8 DEB, 1536 (Decayed)

SL-8 DEB, 1437 (Decayed)

SL-8 DEB, 1490 (Decayed)

SL-8 DEB, 1484 (Decayed)

SL-8 DEB, 1530 (Decayed)

SL-8 DEB, 1535 (Decayed)

SL-8 DEB, 1569 (Decayed)

SL-8 DEB, 1353 (Decayed)

SL-8 DEB, 5733 (Decayed)

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-8 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.
15 mins	2026-06-28 04:53:25.202Z	256.245° W	2026-06-28 05:01:25.202Z	333.525° NNW	36.481°	2026-06-28 05:08:25.202Z	38.844° NE
12 mins	2026-06-28 06:59:25.202Z	306.082° NW	2026-06-28 07:05:25.202Z	359.236° N	24.129°	2026-06-28 07:11:25.202Z	48.029° ENE
13 mins	2026-06-28 09:03:25.202Z	325.683° NNW	2026-06-28 09:09:25.202Z	24.73° NE	30.246°	2026-06-28 09:16:25.202Z	85.949° E
15 mins	2026-06-28 11:05:25.202Z	313.784° NW	2026-06-28 11:12:25.202Z	159.58° S	44.702°	2026-06-28 11:20:25.202Z	138.961° SSE
10 mins	2026-06-28 13:08:25.202Z	279.371° WNW	2026-06-28 13:12:25.202Z	246.844° WSW	19.612°	2026-06-28 13:18:25.202Z	201.266° SSW
14 mins	2026-06-29 02:10:25.202Z	182.913° SSW	2026-06-29 02:16:25.202Z	127.184° SE	33.421°	2026-06-29 02:24:25.202Z	57.108° ENE
15 mins	2026-06-29 04:11:25.202Z	246.455° WSW	2026-06-29 04:18:25.202Z	328.03° NNW	40.928°	2026-06-29 04:26:25.202Z	41.867° NE

Items per page:

1–7 of 7 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-8 DEB *, 3931 on other resources

View SL-8 DEB *, 3931 on Heavens-Above

View SL-8 DEB *, 3931 on Keep Track

View SL-8 DEB *, 3931 on Celestrak

View SL-8 DEB *, 3931 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-8 DEB *, 3931

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-06-27T07:25:06.257Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #20 in the year 1965 (1965-03-15 UTC)

SL-8 DEB * Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-8 DEB *, 3931 on other resources

Documentation

**SL-8 DEB *, 3931**

Expand to show TLE details & history
Last TLE update: 21 hours ago