DELTA 1 DEB, 7139

Orbit data source: Space-Track

DELTA 1 DEB, 7139 is space debris in SSO originally from a launch on Tue, 06 Nov 1973 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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Iframe URL

https://www.satcat.com/sats-embedded/7139?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

7139, 1973-086DD

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1973-11-06 (52 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.2 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 DELTA 1 DEB
1 07139U 73086DD  25356.31024400  .00000198  00000-0  18739-2 0  9997
2 07139 102.3909 159.2238 0067650 201.7254 278.5645 12.37768651343385

Epoch: 2025-12-22T07:26Z

TLE epoch observation values (Epoch: 2025-12-22T07:26:45.081Z)

Latitude

58.29294°

Longitude

157.15102°

Altitude

1,518.089 km

Speed

7.115 km/s

True Right ascension

23h 59m 47s

True Declination

58° 09' 14"

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

22:49:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,567.065 km

Perigee altitude

1,460.289 km

Semi-major axis

7,891.814 km

Eccentricity

0.00677

Inclination

102.3909°

RAAN

159.2238°

Arg. of periapsis

201.7254°

True anomaly

277.79699°

Mean anomaly

278.5645°

Eccentric anomaly

278.18084°

Mean motion

3.09584 °/min

Orbital period

116.29 mins

BSTAR

0.0018739

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Other satellites on launch #86 in the year 1973 (1973-11-06 UTC)

DELTA 1 DEB, 7488 (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.
15 mins	2025-12-23 00:52:08.645Z	7.344° NNE	2025-12-23 00:59:08.645Z	302.642° NW	38.337°	2025-12-23 01:07:08.645Z	224.559° SW
5 mins	2025-12-23 08:17:08.645Z	59.503° ENE	2025-12-23 08:19:08.645Z	45.196° ENE	13.228°	2025-12-23 08:22:08.645Z	23.765° NE
15 mins	2025-12-23 10:04:08.645Z	136.966° SSE	2025-12-23 10:11:08.645Z	75.016° E	39.781°	2025-12-23 10:19:08.645Z	351.203° N
14 mins	2025-12-23 11:59:08.645Z	203.874° SW	2025-12-23 12:06:08.645Z	265.289° W	29.342°	2025-12-23 12:13:08.645Z	322.381° NNW
9 mins	2025-12-23 22:18:08.645Z	61.072° ENE	2025-12-23 22:22:08.645Z	92.967° ESE	17.184°	2025-12-23 22:27:08.645Z	130.801° 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, 7139 on other resources

View DELTA 1 DEB, 7139 on Heavens-Above

View DELTA 1 DEB, 7139 on Keep Track

View DELTA 1 DEB, 7139 on Celestrak

View DELTA 1 DEB, 7139 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, 7139

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-12-22T07:26:45.081Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #86 in the year 1973 (1973-11-06 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 7139 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago