DELTA 1 DEB, 10251
Orbit data source: Space-Track
DELTA 1 DEB, 10251 is space debris in LEO originally from a launch on Thu, 14 Jul 1977 UTC launched from the Air Force Eastern Test Range (AFETR). 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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10251 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, 0.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 DELTA 1 DEB
1 10251U 77065CC 26171.04833199 .00001047 00000-0 12596-3 0 9996
2 10251 28.9687 164.1134 0667354 124.9257 241.5860 13.85559925417664Epoch: 2026-06-20T01:09Z
TLE epoch observation values (Epoch: 2026-06-20T01:09:35.883Z)
Latitude
-0.00005°
Longitude
-121.55475°
Altitude
1,199.12 km
Speed
7.129 km/s
True Right ascension
10h 56m 27s
True Declination
0° 00' 00"
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
23:26:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,437.086 km
Perigee altitude
459.239 km
Semi-major axis
7,326.3 km
Eccentricity
0.06674
Inclination
28.9687°
RAAN
164.1134°
Arg. of periapsis
124.9257°
True anomaly
235.13071°
Mean anomaly
241.586°
Eccentric anomaly
238.33168°
Mean motion
3.46112 °/min
Orbital period
104.01 mins
BSTAR
0.00012596
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Other satellites on launch #65 in the year 1977 (1977-07-14 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-23 01:59:36.416Z | 203.647° SW | 2026-06-23 02:03:36.416Z | 168.083° S | 16.95° | 2026-06-23 02:06:36.416Z | 134.392° SE |
| 6 mins | 2026-06-23 03:50:36.416Z | 219.249° SW | 2026-06-23 03:53:36.416Z | 180.763° SSW | 22.024° | 2026-06-23 03:56:36.416Z | 135.181° SSE |
| 4 mins | 2026-06-23 05:41:36.416Z | 219.367° SW | 2026-06-23 05:43:36.416Z | 187.731° SSW | 17.519° | 2026-06-23 05:45:36.416Z | 155.862° SSE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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