DELTA 1 DEB, 12529

Orbit data source: Space-Track

DELTA 1 DEB, 12529 is space debris in LEO originally from a launch on Thu, 29 Jul 1976 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/12529?theme=dark&initialShowStats=false

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Identifier

12529, 1976-077DJ

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1976-07-29 (50 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.4 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 DEB
1 12529U 76077DJ  26255.88803256 -.00001606  00000-0 -26041-1 0  9995
2 12529 103.4964   6.3500 0739376  24.9625 338.5312 11.24866157841824

Epoch: 2026-09-12T21:18Z

TLE epoch observation values (Epoch: 2026-09-12T21:18:46.013Z)

Latitude

-0.00003°

Longitude

54.76771°

Altitude

1,466.011 km

Speed

7.368 km/s

True Right ascension

00h 25m 24s

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

03:06:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,655.584 km

Perigee altitude

1,411.691 km

Semi-major axis

8,411.774 km

Eccentricity

0.07394

Inclination

103.4964°

RAAN

6.35°

Arg. of periapsis

24.9625°

True anomaly

335.14169°

Mean anomaly

338.5312°

Eccentric anomaly

336.86689°

Mean motion

2.81327 °/min

Orbital period

127.96 mins

BSTAR

-0.026041

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Other satellites on launch #77 in the year 1976 (1976-07-29 UTC)

DELTA 1 DEB, 10651 (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.
22 mins	2026-09-13 19:16:38.155Z	35.05° NE	2026-09-13 19:26:38.155Z	103.996° ESE	42.691°	2026-09-13 19:38:38.155Z	169.338° S
21 mins	2026-09-13 21:22:38.155Z	9.68° NNE	2026-09-13 21:31:38.155Z	292.994° NW	59.287°	2026-09-13 21:43:38.155Z	223.736° SW
11 mins	2026-09-13 23:29:38.155Z	346.89° N	2026-09-13 23:34:38.155Z	316.565° NNW	16.646°	2026-09-13 23:40:38.155Z	285.334° WNW
11 mins	2026-09-14 05:30:38.155Z	93.992° ESE	2026-09-14 05:35:38.155Z	45.087° ENE	26.89°	2026-09-14 05:41:38.155Z	359.475° N
14 mins	2026-09-14 07:33:38.155Z	176.564° S	2026-09-14 07:39:38.155Z	250.972° W	63.286°	2026-09-14 07:47:38.155Z	334.296° NNW

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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, 12529 on other resources

View DELTA 1 DEB, 12529 on Heavens-Above

View DELTA 1 DEB, 12529 on Keep Track

View DELTA 1 DEB, 12529 on Celestrak

View DELTA 1 DEB, 12529 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, 12529

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-09-12T21:18:46.013Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #77 in the year 1976 (1976-07-29 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 12529 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 13 hours ago