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: 6 hours ago

TLE from 6 hours ago

0 DELTA 1 DEB
1 12529U 76077DJ  26171.29081445 -.00007763  00000-0 -12176+0 0  9997
2 12529 103.5093 290.9685 0773979 143.6198 222.0036 11.24542555832311

Epoch: 2026-06-20T06:58Z

TLE epoch observation values (Epoch: 2026-06-20T06:58:46.368Z)

Latitude

-0.00003°

Longitude

-82.23224°

Altitude

2,544.635 km

Speed

6.481 km/s

True Right ascension

19h 23m 52s

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

23:39:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,686.429 km

Perigee altitude

1,384.072 km

Semi-major axis

8,413.388 km

Eccentricity

0.0774

Inclination

103.5093°

RAAN

290.9685°

Arg. of periapsis

143.6198°

True anomaly

216.4761°

Mean anomaly

222.0036°

Eccentric anomaly

219.20077°

Mean motion

2.81246 °/min

Orbital period

128 mins

BSTAR

-0.12176

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

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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.
14 mins	2026-06-20 20:28:54.069Z	31.124° NE	2026-06-20 20:35:54.069Z	110.994° ESE	38.241°	2026-06-20 20:42:54.069Z	179.129° S
11 mins	2026-06-20 22:35:54.069Z	353.093° N	2026-06-20 22:40:54.069Z	302.547° NW	26.642°	2026-06-20 22:46:54.069Z	249.469° W
6 mins	2026-06-21 04:39:54.069Z	53.979° ENE	2026-06-21 04:41:54.069Z	42.236° NE	12.567°	2026-06-21 04:45:54.069Z	17.5° NNE
19 mins	2026-06-21 06:34:54.069Z	129.696° SE	2026-06-21 06:44:54.069Z	67.474° ENE	38.098°	2026-06-21 06:53:54.069Z	351.69° N
20 mins	2026-06-21 08:39:54.069Z	189.37° SSW	2026-06-21 08:49:54.069Z	251.971° W	35.938°	2026-06-21 08:59:54.069Z	327.485° 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: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-06-20T06:58:46.368Z)

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: 6 hours ago