SL-8 R/B, 3577

Orbit data source: Space-Track

SL-8 R/B, 3577 is space debris in LEO originally from a launch on Sat, 30 Nov 1968 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/3577?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3577, 1968-106B

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Yuzhnoe

Mission

Spacecraft

Bus & Motor

S3, Unknown motor

Mass

1,434 kg wet, 1,434 kg dry

Launch date (UTC)

1968-11-30 (57 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: 12 hours ago

TLE from 12 hours ago

0 SL-8 R/B
1 03577U 68106B   25356.18506185  .00000003  00000-0  55574-4 0  9991
2 03577  74.0512 253.9103 0035626 274.1648 239.7048 13.19119818746057

Epoch: 2025-12-22T04:26Z

TLE epoch observation values (Epoch: 2025-12-22T04:26:29.343Z)

Latitude

25.4236°

Longitude

-91.46633°

Altitude

1,204.414 km

Speed

7.248 km/s

True Right ascension

04h 24m 34s

True Declination

25° 17' 54"

Sunlit

Object was in full shadow 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

15:26:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,212.785 km

Perigee altitude

1,158.89 km

Semi-major axis

7,563.975 km

Eccentricity

0.00356

Inclination

74.0512°

RAAN

253.9103°

Arg. of periapsis

274.1648°

True anomaly

239.3531°

Mean anomaly

239.7048°

Eccentric anomaly

239.52887°

Mean motion

3.29927 °/min

Orbital period

109.11 mins

BSTAR

0.000055574

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Other satellites on launch #106 in the year 1968 (1968-11-30 UTC)

COSMOS 256, 3576

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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.
12 mins	2025-12-22 18:20:11.584Z	185.742° SSW	2025-12-22 18:26:11.584Z	80.006° E	43.348°	2025-12-22 18:32:11.584Z	23.895° NE
10 mins	2025-12-22 20:13:11.584Z	261.274° W	2025-12-22 20:18:11.584Z	309.672° NW	21.431°	2025-12-22 20:23:11.584Z	353.894° N
12 mins	2025-12-23 03:55:11.584Z	358.62° N	2025-12-23 04:00:11.584Z	58.993° ENE	35.89°	2025-12-23 04:07:11.584Z	135.687° SSE
11 mins	2025-12-23 05:46:11.584Z	317.697° NNW	2025-12-23 05:51:11.584Z	266.954° W	28.771°	2025-12-23 05:57:11.584Z	205.076° 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, 3577 on other resources

View SL-8 R/B, 3577 on Heavens-Above

View SL-8 R/B, 3577 on Keep Track

View SL-8 R/B, 3577 on Celestrak

View SL-8 R/B, 3577 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, 3577

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2025-12-22T04:26:29.343Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #106 in the year 1968 (1968-11-30 UTC)

SL-8 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-8 R/B, 3577 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago