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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<iframe src="https://www.satcat.com/sats-embedded/10251?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/10251?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

10251, 1977-065CC

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1977-07-14 (49 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 7 hours ago

TLE from 7 hours ago

0 DELTA 1 DEB
1 10251U 77065CC  26089.12267013  .00006572  00000-0  89064-3 0  9991
2 10251  28.9702 249.4514 0668805 125.7921 240.6693 13.85127705406298

Epoch: 2026-03-30T02:56Z

TLE epoch observation values (Epoch: 2026-03-30T02:56:38.699Z)

Latitude

0°

Longitude

17.77143°

Altitude

1,207.712 km

Speed

7.121 km/s

True Right ascension

16h 37m 48s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

15:53:30

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,439.774 km

Perigee altitude

459.597 km

Semi-major axis

7,327.822 km

Eccentricity

0.06688

Inclination

28.9702°

RAAN

249.4514°

Arg. of periapsis

125.7921°

True anomaly

234.26436°

Mean anomaly

240.6693°

Eccentric anomaly

237.43962°

Mean motion

3.46004 °/min

Orbital period

104.05 mins

BSTAR

0.00089064

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Other satellites on launch #65 in the year 1977 (1977-07-14 UTC)

DELTA 1 DEB, 10390 (Decayed)

DELTA 1 DEB, 10493 (Decayed)

DELTA 1 DEB, 10304 (Decayed)

DELTA 1 DEB, 10481 (Decayed)

DELTA 1 DEB, 10308 (Decayed)

DELTA 1 DEB, 10219 (Decayed)

DELTA 1 DEB, 10244 (Decayed)

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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	2026-03-30 15:21:41.410Z	200.661° SSW	2026-03-30 15:23:41.410Z	172.367° S	17.088°	2026-03-30 15:25:41.410Z	141.793° SSE
4 mins	2026-03-30 17:11:41.410Z	212.124° SW	2026-03-30 17:12:41.410Z	195.651° SSW	16.528°	2026-03-30 17:15:41.410Z	144.591° SSE

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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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Check out DELTA 1 DEB, 10251 on other resources

View DELTA 1 DEB, 10251 on Heavens-Above

View DELTA 1 DEB, 10251 on Keep Track

View DELTA 1 DEB, 10251 on Celestrak

View DELTA 1 DEB, 10251 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

DELTA 1 DEB, 10251

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-03-30T02:56:38.699Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #65 in the year 1977 (1977-07-14 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 10251 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 7 hours ago