**SL-8 DEB *, 3965**

Orbit data source: Space-Track

SL-8 DEB *, 3965 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/3965?theme=dark&initialShowStats=false

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Identifier

3965, 1965-020EY

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

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 5 hours ago

TLE from 5 hours ago

0 SL-8 DEB *
1 03965U 65020EY  26018.57557049 -.00000103  00000-0 -99244-4 0  9993
2 03965  56.2994  70.6619 0267693 104.3550  44.4271 12.27609714730999

Epoch: 2026-01-18T13:48Z

TLE epoch observation values (Epoch: 2026-01-18T13:48:49.290Z)

Latitude

23.85324°

Longitude

-91.59108°

Altitude

1,411.767 km

Speed

7.224 km/s

True Right ascension

15h 34m 23s

True Declination

23° 44' 13"

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

20:01:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,771.842 km

Perigee altitude

1,346.88 km

Semi-major axis

7,937.498 km

Eccentricity

0.02677

Inclination

56.2994°

RAAN

70.6619°

Arg. of periapsis

104.355°

True anomaly

46.62635°

Mean anomaly

44.4271°

Eccentric anomaly

45.52146°

Mean motion

3.06915 °/min

Orbital period

117.3 mins

BSTAR

-0.000099244

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

SL-8 DEB, 1410 (Decayed)

COSMOS 61, 1267 (Decayed)

SL-8 DEB, 1481 (Decayed)

SL-8 DEB, 1346 (Decayed)

SL-8 DEB, 1354 (Decayed)

SL-8 DEB, 3749

COSMOS 62, 1268 (Decayed)

SL-8 DEB, 1491 (Decayed)

SL-8 DEB, 1530 (Decayed)

SL-8 R/B, 1270 (Decayed)

SL-8 DEB, 1372 (Decayed)

SL-8 DEB, 1490 (Decayed)

SL-8 DEB, 1400 (Decayed)

SL-8 DEB, 1568 (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.
15 mins	2026-01-19 04:45:14.149Z	192.944° SSW	2026-01-19 04:53:14.149Z	124.832° SE	36.208°	2026-01-19 05:00:14.149Z	57.257° ENE
15 mins	2026-01-19 06:48:14.149Z	249.755° W	2026-01-19 06:55:14.149Z	312.649° NW	38.922°	2026-01-19 07:03:14.149Z	39.506° NE
12 mins	2026-01-19 08:54:14.149Z	300.091° NW	2026-01-19 09:00:14.149Z	352.152° N	24.251°	2026-01-19 09:06:14.149Z	43.075° NE
13 mins	2026-01-19 10:59:14.149Z	324.226° NNW	2026-01-19 11:05:14.149Z	20.05° NNE	27.572°	2026-01-19 11:12:14.149Z	79.831° E
15 mins	2026-01-19 13:02:14.149Z	317.338° NNW	2026-01-19 13:09:14.149Z	80.27° E	44.372°	2026-01-19 13:17:14.149Z	131.66° SE
11 mins	2026-01-19 15:05:14.149Z	287.725° WNW	2026-01-19 15:10:14.149Z	244.949° WSW	23.442°	2026-01-19 15:16:14.149Z	194.801° SSW

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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 *, 3965 on other resources

View SL-8 DEB *, 3965 on Heavens-Above

View SL-8 DEB *, 3965 on Keep Track

View SL-8 DEB *, 3965 on Celestrak

View SL-8 DEB *, 3965 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 *, 3965

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 5 hours ago

TLE from 5 hours ago

TLE epoch observation values (Epoch: 2026-01-18T13:48:49.290Z)

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 *, 3965 on other resources

Documentation

**SL-8 DEB *, 3965**

Expand to show TLE details & history
Last TLE update: 5 hours ago