SL-3 R/B, 877

Orbit data source: Space-Track

SL-3 R/B, 877 is space debris in LEO originally from a launch on Fri, 28 Aug 1964 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/877?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

877, 1964-053B

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Progress

Mission

Spacecraft

Bus & Motor

BLOK-E, Unknown motor

Mass

1,440 kg wet, 1,440 kg dry

Launch date (UTC)

1964-08-28 (62 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 SL-3 R/B
1 00877U 64053B   26112.28398896  .00000104  00000-0  44361-4 0  9992
2 00877  65.0772 203.4217 0081056 278.5470  80.6451 14.61397175273160

Epoch: 2026-04-22T06:48Z

TLE epoch observation values (Epoch: 2026-04-22T06:48:56.646Z)

Latitude

-0.00001°

Longitude

-109.16196°

Altitude

681.813 km

Speed

7.521 km/s

True Right ascension

13h 33m 41s

True Declination

0° 00' 00"

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

00:20:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

744.483 km

Perigee altitude

629.946 km

Semi-major axis

7,065.352 km

Eccentricity

0.00811

Inclination

65.0772°

RAAN

203.4217°

Arg. of periapsis

278.547°

True anomaly

81.56305°

Mean anomaly

80.6451°

Eccentric anomaly

81.10393°

Mean motion

3.65462 °/min

Orbital period

98.51 mins

BSTAR

0.000044361

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Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)

COSMOS 44, 876

SL-3 DEB, 21126

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SL-3 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.
4 mins	2026-04-22 17:18:11.351Z	239.915° WSW	2026-04-22 17:18:11.351Z	239.915° WSW	39.766°	2026-04-22 17:22:11.351Z	168.451° S
8 mins	2026-04-23 07:36:11.351Z	201.404° SSW	2026-04-23 07:39:11.351Z	121.235° SE	44.195°	2026-04-23 07:44:11.351Z	34.544° NE
5 mins	2026-04-23 09:19:11.351Z	290.284° WNW	2026-04-23 09:21:11.351Z	318.122° NNW	16.962°	2026-04-23 09:24:11.351Z	356.616° N
8 mins	2026-04-23 16:13:11.351Z	342.261° N	2026-04-23 16:16:11.351Z	40.413° NE	40.006°	2026-04-23 16:21:11.351Z	134.099° SE

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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-3 R/B, 877 on other resources

View SL-3 R/B, 877 on Heavens-Above

View SL-3 R/B, 877 on Keep Track

View SL-3 R/B, 877 on Celestrak

View SL-3 R/B, 877 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-3 R/B, 877

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-04-22T06:48:56.646Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)

SL-3 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-3 R/B, 877 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago