DELTA 1 DEB, 21549
Orbit data source: Space-Track
DELTA 1 DEB, 21549 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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21549 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, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 21 hours ago
TLE from 21 hours ago
0 DELTA 1 DEB
1 21549U 75052HD 26241.91131390 .00000091 00000-0 33890-3 0 9998
2 21549 99.7884 222.5776 0204252 76.8207 313.6130 13.09529059682875Epoch: 2026-08-29T21:52Z
TLE epoch observation values (Epoch: 2026-08-29T21:52:17.520Z)
Latitude
28.29685°
Longitude
-88.91185°
Altitude
1,122.871 km
Speed
7.344 km/s
True Right ascension
14h 29m 06s
True Declination
28° 09' 38"
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
10:19:48
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,377.581 km
Perigee altitude
1,067.099 km
Semi-major axis
7,600.477 km
Eccentricity
0.02043
Inclination
99.7884°
RAAN
222.5776°
Arg. of periapsis
76.8207°
True anomaly
311.88831°
Mean anomaly
313.613°
Eccentric anomaly
312.75369°
Mean motion
3.27553 °/min
Orbital period
109.91 mins
BSTAR
0.0003389
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-08-30 21:41:24.058Z | 126.915° SE | 2026-08-30 21:47:24.058Z | 60.341° ENE | 29.855° | 2026-08-30 21:52:24.058Z | 4.773° NNE |
| 11 mins | 2026-08-30 23:30:24.058Z | 199.643° SSW | 2026-08-30 23:35:24.058Z | 261.172° W | 31.964° | 2026-08-30 23:41:24.058Z | 328.839° NNW |
| 11 mins | 2026-08-31 11:01:24.058Z | 37.35° NE | 2026-08-31 11:05:24.058Z | 89.092° E | 34.47° | 2026-08-31 11:12:24.058Z | 169.469° S |
| 10 mins | 2026-08-31 12:49:24.058Z | 350.218° N | 2026-08-31 12:54:24.058Z | 289.298° WNW | 28.892° | 2026-08-31 12:59:24.058Z | 238.101° WSW |
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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