DELTA 1 DEB, 21278
Orbit data source: Space-Track
DELTA 1 DEB, 21278 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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21278 intel report (Beta)
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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, 0.3 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 19 hours ago
TLE from 19 hours ago
0 DELTA 1 DEB
1 21278U 75052P 26241.97911061 .00000002 00000-0 12059-3 0 9990
2 21278 99.8363 26.2848 0388829 71.6208 53.4291 12.77573928645978Epoch: 2026-08-29T23:29Z
TLE epoch observation values (Epoch: 2026-08-29T23:29:55.156Z)
Latitude
50.32571°
Longitude
-112.3731°
Altitude
1,187.832 km
Speed
7.345 km/s
True Right ascension
14h 33m 09s
True Declination
50° 09' 58"
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
10:20:06
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,649.079 km
Perigee altitude
1,048.2 km
Semi-major axis
7,726.777 km
Eccentricity
0.03888
Inclination
99.8363°
RAAN
26.2848°
Arg. of periapsis
71.6208°
True anomaly
57.11156°
Mean anomaly
53.4291°
Eccentric anomaly
55.2598°
Mean motion
3.19555 °/min
Orbital period
112.66 mins
BSTAR
0.00012059
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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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-08-30 22:00:41.920Z | 27.813° NE | 2026-08-30 22:06:41.920Z | 96.665° ESE | 37.597° | 2026-08-30 22:13:41.920Z | 173.721° S |
| 10 mins | 2026-08-30 23:53:41.920Z | 343.016° N | 2026-08-30 23:57:41.920Z | 295.225° NW | 27.102° | 2026-08-31 00:03:41.920Z | 239.774° WSW |
| 10 mins | 2026-08-31 08:49:41.920Z | 132.019° SE | 2026-08-31 08:54:41.920Z | 68.072° E | 34.56° | 2026-08-31 08:59:41.920Z | 2.123° NNE |
| 9 mins | 2026-08-31 10:41:41.920Z | 214.077° SW | 2026-08-31 10:45:41.920Z | 260.101° W | 25.676° | 2026-08-31 10:50:41.920Z | 318.181° 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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