DELTA 1 DEB, 21281
Orbit data source: Space-Track
DELTA 1 DEB, 21281 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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21281 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, 0.7 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 DELTA 1 DEB
1 21281U 75052S 25316.30439678 .00000162 00000-0 40830-3 0 9997
2 21281 99.9834 248.1814 0057546 94.0490 71.1008 13.34287307680806Epoch: 2025-11-12T07:18Z
TLE epoch observation values (Epoch: 2025-11-12T07:18:19.881Z)
Latitude
13.9765°
Longitude
-90.58175°
Altitude
1,118.887 km
Speed
7.301 km/s
True Right ascension
04h 42m 43s
True Declination
13° 53' 60"
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
13:47:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,171.167 km
Perigee altitude
1,084.778 km
Semi-major axis
7,506.109 km
Eccentricity
0.00575
Inclination
99.9834°
RAAN
248.1814°
Arg. of periapsis
94.049°
True anomaly
71.72612°
Mean anomaly
71.1008°
Eccentric anomaly
71.41332°
Mean motion
3.3375 °/min
Orbital period
107.87 mins
BSTAR
0.0004083
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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 | 2025-11-12 17:30:19.348Z | 69.119° E | 2025-11-12 17:32:19.348Z | 50.629° ENE | 12.158° | 2025-11-12 17:34:19.348Z | 32.53° NE |
| 11 mins | 2025-11-12 19:12:19.348Z | 151.215° SSE | 2025-11-12 19:17:19.348Z | 66.185° ENE | 43.402° | 2025-11-12 19:23:19.348Z | 349.989° N |
| 7 mins | 2025-11-12 21:01:19.348Z | 238.667° WSW | 2025-11-12 21:04:19.348Z | 270.299° WNW | 17.817° | 2025-11-12 21:08:19.348Z | 308.733° NW |
| 11 mins | 2025-11-13 08:17:19.348Z | 23.227° NE | 2025-11-13 08:22:19.348Z | 100.186° ESE | 42.847° | 2025-11-13 08:28:19.348Z | 185.157° SSW |
| 7 mins | 2025-11-13 10:05:19.348Z | 332.323° NNW | 2025-11-13 10:08:19.348Z | 298.079° NW | 20.439° | 2025-11-13 10:12:19.348Z | 257.878° W |
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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