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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<iframe src="https://www.satcat.com/sats-embedded/877?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/877?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

877, 1964-053B

Orbit

LEO

Last TLE update

15 hours ago

Origin

Russian Strategic Rocket Forces (CIS)

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 (61 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 1.9 m

Radar Cross Section

10.414 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 15 hours ago

0 SL-3 R/B
1 00877U 64053B   25224.40265296  .00000256  00000-0  74955-4 0  9996
2 00877  65.0752 224.6804 0060746   4.8108 355.3562 14.61119737236212

Epoch: 2025-08-12T09:39Z

TLE epoch observation values (Epoch: 2025-08-12T09:39:49.215Z)

Latitude

-0.00005°

Longitude

118.62951°

Altitude

648.771 km

Speed

7.557 km/s

True Right ascension

14h 58m 43s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-13.90301°

Longitude

110.26386°

Altitude

653.955 km

Speed

7.552 km/s

Apparent Right ascension

13h 26m 59s

Apparent Declination

-70° 38' 44"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

14:49:04

Azimuth

187.176° SSW

Elevation

-21.552°

Doppler factor

Orbital elements

Apogee altitude

731.034 km

Perigee altitude

645.185 km

Semi-major axis

7,066.247 km

Eccentricity

0.00607

Inclination

65.0752°

RAAN

224.6804°

Arg. of periapsis

4.8108°

True anomaly

355.29941°

Mean anomaly

355.3562°

Eccentric anomaly

355.32785°

Mean motion

3.65393 °/min

Orbital period

98.52 mins

BSTAR

0.000074955

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

COSMOS 44, 876

SL-3 DEB, 21126

SL-3 R/B Visibility forecast

Observer location: undefined°, undefined°
Set Observer location

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.
5 mins	2025-08-13 00:34:44.616Z	143.383° SSE	2025-08-13 00:37:44.616Z	102.048° ESE	15.018°	2025-08-13 00:39:44.616Z	75.345° E
8 mins	2025-08-13 02:14:44.616Z	229.869° WSW	2025-08-13 02:18:44.616Z	331.098° NNW	38.383°	2025-08-13 02:22:44.616Z	23.077° NE
4 mins	2025-08-13 09:11:44.616Z	20.427° NNE	2025-08-13 09:13:44.616Z	49.413° ENE	16.17°	2025-08-13 09:15:44.616Z	75.491° E
8 mins	2025-08-13 10:51:44.616Z	324.024° NNW	2025-08-13 10:54:44.616Z	293.045° NW	43.091°	2025-08-13 10:59:44.616Z	155.968° SSE

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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Authenticating...

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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

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