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: 9 hours ago
TLE from 9 hours ago
0 DELTA 1 DEB
1 10251U 77065CC 26263.04071947 .00002829 00000-0 36665-3 0 9995
2 10251 28.9762 23.8333 0665743 212.7820 142.9707 13.85894541430432Epoch: 2026-09-20T00:58Z
TLE epoch observation values (Epoch: 2026-09-20T00:58:38.162Z)
Latitude
0.00001°
Longitude
10.23371°
Altitude
1,341.323 km
Speed
6.991 km/s
True Right ascension
01h 35m 19s
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
02:41:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,434.649 km
Perigee altitude
459.319 km
Semi-major axis
7,325.121 km
Eccentricity
0.06657
Inclination
28.9762°
RAAN
23.8333°
Arg. of periapsis
212.782°
True anomaly
147.27411°
Mean anomaly
142.9707°
Eccentric anomaly
145.15036°
Mean motion
3.46195 °/min
Orbital period
103.99 mins
BSTAR
0.00036665
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-09-20 11:33:46.806Z | 205.095° SW | 2026-09-20 11:39:46.806Z | 157.712° S | 25.882° | 2026-09-20 11:45:46.806Z | 110.924° ESE |
| 13 mins | 2026-09-20 13:23:46.806Z | 231.525° WSW | 2026-09-20 13:29:46.806Z | 178.977° S | 36.747° | 2026-09-20 13:36:46.806Z | 112.254° ESE |
| 11 mins | 2026-09-20 15:14:46.806Z | 244.989° WSW | 2026-09-20 15:20:46.806Z | 185.833° SSW | 33.508° | 2026-09-20 15:25:46.806Z | 132.475° SE |
| 7 mins | 2026-09-20 17:06:46.806Z | 238.829° WSW | 2026-09-20 17:09:46.806Z | 211.455° SW | 17.856° | 2026-09-20 17:13:46.806Z | 169.083° S |
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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