**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.

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https://www.satcat.com/sats-embedded/3931?theme=dark&initialShowStats=false

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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 (62 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: 1 day ago

TLE from 1 day ago

0 SL-8 DEB *
1 03931U 65020EV  26286.38494924 -.00000088  00000-0  22541-4 0  9991
2 03931  56.0619 271.7370 0189688 239.4727 271.8121 12.35218839791760

Epoch: 2026-10-13T09:14Z

TLE epoch observation values (Epoch: 2026-10-13T09:14:19.614Z)

Latitude

25.2656°

Longitude

-87.21892°

Altitude

1,526.278 km

Speed

7.106 km/s

True Right ascension

04h 53m 15s

True Declination

25° 08' 46"

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

05:43:29

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,676.707 km

Perigee altitude

1,376.814 km

Semi-major axis

7,904.897 km

Eccentricity

0.01897

Inclination

56.0619°

RAAN

271.737°

Arg. of periapsis

239.4727°

True anomaly

269.63841°

Mean anomaly

271.8121°

Eccentric anomaly

270.72535°

Mean motion

3.08815 °/min

Orbital period

116.57 mins

BSTAR

0.000022541

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

SL-8 R/B, 1270 (Decayed)

SL-8 DEB, 1483 (Decayed)

SL-8 DEB, 1493 (Decayed)

SL-8 DEB, 1341 (Decayed)

SL-8 DEB, 1541 (Decayed)

SL-8 DEB, 1398 (Decayed)

SL-8 DEB, 1479

SL-8 DEB, 1351 (Decayed)

SL-8 DEB, 1546 (Decayed)

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SL-8 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.
14 mins	2026-10-14 23:20:54.442Z	162.957° S	2026-10-14 23:27:54.442Z	115.098° SE	25.032°	2026-10-14 23:34:54.442Z	67.713° E
18 mins	2026-10-15 01:20:54.442Z	221.413° SW	2026-10-15 01:28:54.442Z	116.143° SE	88.11°	2026-10-15 01:38:54.442Z	45.995° ENE
17 mins	2026-10-15 03:23:54.442Z	272.941° WNW	2026-10-15 03:31:54.442Z	335.307° NNW	40.263°	2026-10-15 03:40:54.442Z	43.683° NE
15 mins	2026-10-15 05:29:54.442Z	311.711° NW	2026-10-15 05:36:54.442Z	4.812° NNE	31.203°	2026-10-15 05:44:54.442Z	63.245° ENE
17 mins	2026-10-15 07:32:54.442Z	319.492° NNW	2026-10-15 07:40:54.442Z	24.16° NE	51.708°	2026-10-15 07:49:54.442Z	106.147° ESE
16 mins	2026-10-15 09:35:54.442Z	306.105° NW	2026-10-15 09:43:54.442Z	224.781° SW	57.08°	2026-10-15 09:51:54.442Z	159.588° S

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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-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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-10-13T09:14:19.614Z)

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: 1 day ago