DELTA 1 DEB, 21369 (Decayed)
Orbit data source: Space-Track
DELTA 1 DEB, 21369 was space debris in SSO originally from a launch on Thu, 12 Jun 1975 UTC launched from the Air Force Western Test Range (AFWTR). 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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21369 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Unknown
Mission
Decayed spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 week ago
TLE from 1 week ago
0 DELTA 1 DEB
1 21369U 75052CP 25302.58632137 .08840260 23813-0 31879-1 0 9991
2 21369 99.5934 24.5090 0020789 306.3300 53.6050 15.97241645762641Epoch: 2025-10-29T14:04Z
TLE epoch observation values (Epoch: 2025-10-29T14:04:18.166Z)
Latitude
0°
Longitude
135.27598°
Altitude
276.997 km
Speed
7.746 km/s
True Right ascension
01h 38m 02s
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
09:19:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
292.889 km
Perigee altitude
265.21 km
Semi-major axis
6,657.187 km
Eccentricity
0.00208
Inclination
99.5934°
RAAN
24.509°
Arg. of periapsis
306.33°
True anomaly
53.79705°
Mean anomaly
53.605°
Eccentric anomaly
53.701°
Mean motion
3.99583 °/min
Orbital period
90.09 mins
BSTAR
0.031879
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Other satellites on launch #52 in the year 1975 (1975-06-12 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 DEB Visibility
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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. |
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| This satellite is decayed. |
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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