SL-3 R/B, 4420
Orbit data source: Space-Track
SL-3 R/B, 4420 is space debris in LEO originally from a launch on Tue, 23 Jun 1970 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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4420 intel report (Beta)
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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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 SL-3 R/B
1 4420U 70047B 26171.20285186 .00000056 00000-0 23035-4 0 9995
2 4420 81.2302 353.9650 0085985 261.2762 97.8664 14.12626661882441Epoch: 2026-06-20T04:52Z
TLE epoch observation values (Epoch: 2026-06-20T04:52:06.400Z)
Latitude
-0.00004°
Longitude
12.51747°
Altitude
862.332 km
Speed
7.417 km/s
True Right ascension
23h 35m 51s
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
23:07:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
909.698 km
Perigee altitude
785.438 km
Semi-major axis
7,225.705 km
Eccentricity
0.0086
Inclination
81.2302°
RAAN
353.965°
Arg. of periapsis
261.2762°
True anomaly
98.84096°
Mean anomaly
97.8664°
Eccentric anomaly
98.35383°
Mean motion
3.53364 °/min
Orbital period
101.88 mins
BSTAR
0.000023035
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Other satellites on launch #47 in the year 1970 (1970-06-23 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-06-22 13:04:37.656Z | 199.627° SSW | 2026-06-22 13:09:37.656Z | 280.444° WNW | 42.659° | 2026-06-22 13:14:37.656Z | 2.281° NNE |
| 9 mins | 2026-06-22 23:45:37.656Z | 351.565° N | 2026-06-22 23:49:37.656Z | 4.176° NNE | 44.684° | 2026-06-22 23:54:37.656Z | 171.355° S |
| 4 mins | 2026-06-23 11:13:37.656Z | 102.692° ESE | 2026-06-23 11:15:37.656Z | 80.369° E | 14.15° | 2026-06-23 11:17:37.656Z | 58.932° ENE |
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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