DELTA 1 R/B, 4377
Orbit data source: Space-Track
DELTA 1 R/B, 4377 is space debris in HEO originally from a launch on Thu, 23 Apr 1970 UTC launched from the Air Force Eastern Test Range (AFETR). 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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4377 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Thiokol/TE
Mission
Spacecraft
Bus & Motor
STAR 37, Unknown motor
Mass
65 kg wet, 65 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
SPHERE + CONE, 1.1 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 DELTA 1 R/B
1 04377U 70032B 26266.22935171 .00009651 00000-0 95436-3 0 9996
2 04377 26.7136 306.5284 5679824 94.4310 328.7981 4.56425009638109Epoch: 2026-09-23T05:30Z
TLE epoch observation values (Epoch: 2026-09-23T05:30:15.987Z)
Latitude
-0.00005°
Longitude
-138.10119°
Altitude
4,486.016 km
Speed
6.886 km/s
True Right ascension
20h 26m 11s
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
03:53:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
17,698.646 km
Perigee altitude
255.607 km
Semi-major axis
15,355.263 km
Eccentricity
0.56798
Inclination
26.7136°
RAAN
306.5284°
Arg. of periapsis
94.431°
True anomaly
265.54944°
Mean anomaly
328.7981°
Eccentric anomaly
300.86344°
Mean motion
1.14066 °/min
Orbital period
315.61 mins
BSTAR
0.00095436
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Other satellites on launch #32 in the year 1970 (1970-04-23 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.DELTA 1 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. |
|---|---|---|---|---|---|---|---|
| 42 mins | 2026-09-24 01:56:50.294Z | 199.53° SSW | 2026-09-24 02:26:50.294Z | 173.872° S | 15.65° | 2026-09-24 02:38:50.294Z | 142.895° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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