SL-8 DEB, 1477

Orbit data source: Space-Track

SL-8 DEB, 1477 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/1477?theme=dark&initialShowStats=false

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Identifier

1477, 1965-020BB

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, 0.2 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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

TLE from 5 hours ago

0 SL-8 DEB
1 01477U 65020BB  26101.25013860  .00000266  00000-0  55654-3 0  9999
2 01477  55.4921  91.3260 0588753 214.7358 141.3770 12.99642112869513

Epoch: 2026-04-11T06:00Z

TLE epoch observation values (Epoch: 2026-04-11T06:00:11.975Z)

Latitude

0.00005°

Longitude

161.80399°

Altitude

1,625.652 km

Speed

6.89 km/s

True Right ascension

06h 05m 18s

True Declination

0° 00' 00"

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

17:44:27

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,713.287 km

Perigee altitude

813.493 km

Semi-major axis

7,641.527 km

Eccentricity

0.05888

Inclination

55.4921°

RAAN

91.326°

Arg. of periapsis

214.7358°

True anomaly

145.35559°

Mean anomaly

141.377°

Eccentric anomaly

143.38878°

Mean motion

3.24917 °/min

Orbital period

110.8 mins

BSTAR

0.00055654

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

SL-8 DEB, 1370 (Decayed)

SL-8 DEB, 1476 (Decayed)

SL-8 DEB, 1538 (Decayed)

SL-8 DEB, 1539 (Decayed)

SL-8 DEB, 1354 (Decayed)

SL-8 DEB, 1536 (Decayed)

SL-8 DEB, 1403 (Decayed)

SL-8 DEB, 1600 (Decayed)

SL-8 DEB, 1341 (Decayed)

SL-8 DEB, 1489 (Decayed)

SL-8 DEB, 1352 (Decayed)

SL-8 DEB, 1559 (Decayed)

COSMOS 63, 1269 (Decayed)

SL-8 DEB, 1402 (Decayed)

SL-8 DEB, 1499 (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.
18 mins	2026-04-12 00:33:08.837Z	191.353° SSW	2026-04-12 00:42:08.837Z	124.949° SE	36.195°	2026-04-12 00:51:08.837Z	56.155° ENE
18 mins	2026-04-12 02:29:08.837Z	242.331° WSW	2026-04-12 02:38:08.837Z	319.778° NNW	42.337°	2026-04-12 02:47:08.837Z	43.197° NE
15 mins	2026-04-12 04:28:08.837Z	287.091° WNW	2026-04-12 04:36:08.837Z	346.883° N	29.05°	2026-04-12 04:43:08.837Z	43.957° NE
13 mins	2026-04-12 06:28:08.837Z	318.165° NNW	2026-04-12 06:34:08.837Z	6.168° NNE	27.695°	2026-04-12 06:41:08.837Z	69.948° E
13 mins	2026-04-12 08:25:08.837Z	318.765° NNW	2026-04-12 08:32:08.837Z	39.466° NE	41.834°	2026-04-12 08:38:08.837Z	116.066° SE
10 mins	2026-04-12 10:22:08.837Z	293.15° NW	2026-04-12 10:27:08.837Z	241.335° WSW	29.392°	2026-04-12 10:32:08.837Z	182.606° 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, 1477 on other resources

View SL-8 DEB, 1477 on Heavens-Above

View SL-8 DEB, 1477 on Keep Track

View SL-8 DEB, 1477 on Celestrak

View SL-8 DEB, 1477 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, 1477

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: 2026-04-11T06:00:11.975Z)

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, 1477 on other resources

Documentation

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