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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Edit Public Description
Identifier
Orbit
Country
CISRelated business
Manufacturer
Progress
Mission
Spacecraft
Bus & Motor
BLOK-E, Unknown motor
Mass
1,440 kg wet, 1,440 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 1.9 m
Radar Cross Section
10.414 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 SL-3 R/B
1 00877U 64053B 25243.15668005 .00000694 00000-0 16120-3 0 9999
2 00877 65.0775 169.7231 0062907 357.4214 2.6552 14.61139182238956Epoch: 2025-08-31T03:45Z
TLE epoch observation values (Epoch: 2025-08-31T03:45:37.156Z)
Latitude
0.00001°
Longitude
133.73762°
Altitude
647.087 km
Speed
7.558 km/s
True Right ascension
11h 18m 53s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
04:18:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
732.498 km
Perigee altitude
643.595 km
Semi-major axis
7,066.184 km
Eccentricity
0.00629
Inclination
65.0775°
RAAN
169.7231°
Arg. of periapsis
357.4214°
True anomaly
2.68886°
Mean anomaly
2.6552°
Eccentric anomaly
2.672°
Mean motion
3.65398 °/min
Orbital period
98.52 mins
BSTAR
0.0001612
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Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)
SL-3 R/B Visibility forecast
Observer location: undefined°, undefined°
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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-08-31 20:18:23.290Z | 180.55° SSW | 2025-08-31 20:22:23.290Z | 116.2° SE | 31.43° | 2025-08-31 20:26:23.290Z | 49.159° ENE |
| 6 mins | 2025-08-31 22:01:23.290Z | 267.777° W | 2025-08-31 22:04:23.290Z | 322.062° NNW | 23.337° | 2025-08-31 22:07:23.290Z | 5.39° NNE |
| 7 mins | 2025-09-01 04:56:23.290Z | 359.241° N | 2025-09-01 04:59:23.290Z | 55.451° ENE | 28.203° | 2025-09-01 05:03:23.290Z | 112.179° ESE |
| 7 mins | 2025-09-01 06:37:23.290Z | 301.103° NW | 2025-09-01 06:40:23.290Z | 250.969° W | 28.686° | 2025-09-01 06:44:23.290Z | 187.716° SSW |
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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Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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Authenticating...
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