DELTA 1 DEB, 21515
Orbit data source: Space-Track
DELTA 1 DEB, 21515 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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21515 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: 1 day ago
TLE from 1 day ago
0 DELTA 1 DEB
1 21515U 75052GL 25348.12753027 .00000053 00000-0 26415-3 0 9991
2 21515 99.7272 52.7733 0272273 292.8425 92.0502 12.98716900638664Epoch: 2025-12-14T03:03Z
TLE epoch observation values (Epoch: 2025-12-14T03:03:38.615Z)
Latitude
27.60728°
Longitude
-81.29984°
Altitude
1,283.437 km
Speed
7.21 km/s
True Right ascension
03h 10m 37s
True Declination
27° 28' 34"
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
11:47:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,472.579 km
Perigee altitude
1,056.402 km
Semi-major axis
7,642.627 km
Eccentricity
0.02723
Inclination
99.7272°
RAAN
52.7733°
Arg. of periapsis
292.8425°
True anomaly
95.1629°
Mean anomaly
92.0502°
Eccentric anomaly
93.60712°
Mean motion
3.24847 °/min
Orbital period
110.82 mins
BSTAR
0.00026415
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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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2025-12-15 16:30:50.178Z | 27.391° NE | 2025-12-15 16:38:50.178Z | 99.451° ESE | 34.81° | 2025-12-15 16:45:50.178Z | 165.762° S |
| 13 mins | 2025-12-15 18:21:50.178Z | 356.475° N | 2025-12-15 18:27:50.178Z | 294.143° NW | 34.557° | 2025-12-15 18:34:50.178Z | 229.621° WSW |
| 11 mins | 2025-12-16 03:08:50.178Z | 111.302° ESE | 2025-12-16 03:13:50.178Z | 56.832° ENE | 28.775° | 2025-12-16 03:19:50.178Z | 4.39° NNE |
| 13 mins | 2025-12-16 04:56:50.178Z | 189.713° SSW | 2025-12-16 05:01:50.178Z | 248.267° W | 38.748° | 2025-12-16 05:09:50.178Z | 335.92° 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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