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 URL

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

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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 (48 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: 22 hours ago

TLE from 22 hours ago

0 DELTA 1 DEB
1 10251U 77065CC  25348.66094508  .00003149  00000-0  41352-3 0  9999
2 10251  28.9763 102.2046 0671499 280.9542  71.6238 13.84596053391663

Epoch: 2025-12-14T15:51Z

TLE epoch observation values (Epoch: 2025-12-14T15:51:45.654Z)

Latitude

-0.00003°

Longitude

140.69366°

Altitude

821.619 km

Speed

7.507 km/s

True Right ascension

06h 48m 49s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow 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

11:59:57

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,443.747 km

Perigee altitude

459.37 km

Semi-major axis

7,329.695 km

Eccentricity

0.06715

Inclination

28.9763°

RAAN

102.2046°

Arg. of periapsis

280.9542°

True anomaly

79.10313°

Mean anomaly

71.6238°

Eccentric anomaly

75.34606°

Mean motion

3.45871 °/min

Orbital period

104.09 mins

BSTAR

0.00041352

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

DELTA 1 DEB, 10255 (Decayed)

DELTA 1 DEB, 10191 (Decayed)

DELTA 1 R/B(1), 10144

HIMAWARI 1 (GMS 1), 10143

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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.
15 mins	2025-12-15 14:45:36.925Z	248.489° W	2025-12-15 14:52:36.925Z	188.898° SSW	32.064°	2025-12-15 15:00:36.925Z	125.004° SE
12 mins	2025-12-15 16:37:36.925Z	246.953° WSW	2025-12-15 16:43:36.925Z	200.304° SSW	23.189°	2025-12-15 16:49:36.925Z	154.844° SSE
11 mins	2025-12-16 11:22:36.925Z	207.483° SW	2025-12-16 11:27:36.925Z	154.713° SSE	25.839°	2025-12-16 11:33:36.925Z	108.566° ESE
11 mins	2025-12-16 13:11:36.925Z	236.837° WSW	2025-12-16 13:17:36.925Z	177.074° S	32.714°	2025-12-16 13:22:36.925Z	125.233° SE

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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: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2025-12-14T15:51:45.654Z)

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: 22 hours ago