SL-8 R/B, 5555

Orbit data source: Space-Track

SL-8 R/B, 5555 is space debris in LEO originally from a launch on Wed, 13 Oct 1971 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.

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https://www.satcat.com/sats-embedded/5555?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

5555, 1971-086J

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Omsk Av. Zav.

Mission

Spacecraft

Bus & Motor

S3, Unknown motor

Mass

1,434 kg wet, 1,434 kg dry

Launch date (UTC)

1971-10-13 (55 years ago)

Launch vehicle

Unknown

Launch site

Plesetsk Missile And Space Complex (PKMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 SL-8 R/B
1 05555U 71086J   26171.07237047  .00000031  00000-0  40684-3 0  9998
2 05555  74.0204  13.4261 0075736 326.6695 195.5736 12.27029498449266

Epoch: 2026-06-20T01:44Z

TLE epoch observation values (Epoch: 2026-06-20T01:44:12.808Z)

Latitude

17.26475°

Longitude

-106.00082°

Altitude

1,621.81 km

Speed

7.036 km/s

True Right ascension

12h 33m 22s

True Declination

17° 10' 41"

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

23:08:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,620.052 km

Perigee altitude

1,499.813 km

Semi-major axis

7,938.07 km

Eccentricity

0.00757

Inclination

74.0204°

RAAN

13.4261°

Arg. of periapsis

326.6695°

True anomaly

195.3427°

Mean anomaly

195.5736°

Eccentric anomaly

195.45794°

Mean motion

3.06882 °/min

Orbital period

117.31 mins

BSTAR

0.00040684

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Other satellites on launch #86 in the year 1971 (1971-10-13 UTC)

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SL-8 R/B 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.
16 mins	2026-06-22 13:35:17.593Z	168.637° S	2026-06-22 13:43:17.593Z	97.454° ESE	36.815°	2026-06-22 13:51:17.593Z	30.425° NE
15 mins	2026-06-22 15:36:17.593Z	238.014° WSW	2026-06-22 15:43:17.593Z	302.74° NW	32.715°	2026-06-22 15:51:17.593Z	6.681° NNE
7 mins	2026-06-22 21:56:17.593Z	19.731° NNE	2026-06-22 21:59:17.593Z	40.076° NE	14.169°	2026-06-22 22:03:17.593Z	66.865° ENE
16 mins	2026-06-22 23:54:17.593Z	350.742° N	2026-06-23 00:01:17.593Z	55.822° ENE	40.687°	2026-06-23 00:10:17.593Z	143.774° SSE
14 mins	2026-06-23 01:54:17.593Z	318.332° NNW	2026-06-23 02:01:17.593Z	261.541° W	28.105°	2026-06-23 02:08:17.593Z	209.61° SW

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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 R/B, 5555 on other resources

View SL-8 R/B, 5555 on Heavens-Above

View SL-8 R/B, 5555 on Keep Track

View SL-8 R/B, 5555 on Celestrak

View SL-8 R/B, 5555 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 R/B, 5555

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T01:44:12.808Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #86 in the year 1971 (1971-10-13 UTC)

SL-8 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-8 R/B, 5555 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago