DELTA 1 DEB, 21500
Orbit data source: Space-Track
DELTA 1 DEB, 21500 is 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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21500 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Unknown
Mission
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: 12 hours ago
TLE from 12 hours ago
0 DELTA 1 DEB
1 21500U 75052FV 25291.98373951 .00004981 00000-0 13999-2 0 9996
2 21500 100.0321 76.1595 0162972 46.6379 79.5873 14.38946792778286Epoch: 2025-10-18T23:36Z
TLE epoch observation values (Epoch: 2025-10-18T23:36:35.093Z)
Latitude
50.92927°
Longitude
-113.1758°
Altitude
750.891 km
Speed
7.494 km/s
True Right ascension
17h 54m 42s
True Declination
50° 45' 39"
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
06:13:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
875.499 km
Perigee altitude
642.863 km
Semi-major axis
7,137.318 km
Eccentricity
0.0163
Inclination
100.0321°
RAAN
76.1595°
Arg. of periapsis
46.6379°
True anomaly
81.43053°
Mean anomaly
79.5873°
Eccentric anomaly
80.50828°
Mean motion
3.59949 °/min
Orbital period
100.01 mins
BSTAR
0.0013999
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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 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-10-19 21:20:37.915Z | 73.918° E | 2025-10-19 21:22:37.915Z | 98.842° ESE | 12.897° | 2025-10-19 21:24:37.915Z | 121.845° SE |
| 8 mins | 2025-10-19 22:57:37.915Z | 7.842° NNE | 2025-10-19 23:01:37.915Z | 261.161° W | 42.672° | 2025-10-19 23:05:37.915Z | 206.807° SW |
| 5 mins | 2025-10-20 08:34:37.915Z | 95.406° ESE | 2025-10-20 08:36:37.915Z | 62.27° ENE | 18.191° | 2025-10-20 08:39:37.915Z | 18.702° NNE |
| 6 mins | 2025-10-20 10:12:37.915Z | 203.366° SW | 2025-10-20 10:14:37.915Z | 244.31° WSW | 30.867° | 2025-10-20 10:18:37.915Z | 324.766° NNW |
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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