DELTA 1 DEB, 12531

Orbit data source: Space-Track

DELTA 1 DEB, 12531 is space debris in SSO 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/12531?theme=dark&initialShowStats=false

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Identifier

12531, 1976-077DL

Orbit

SSO

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, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 DEB
1 12531U 76077DL  26033.39814617  .00000007  00000-0  45918-3 0  9999
2 12531 101.7666 189.9352 0134917 352.8331  32.8266 12.18510165 30828

Epoch: 2026-02-02T09:33Z

TLE epoch observation values (Epoch: 2026-02-02T09:33:19.829Z)

Latitude

25.94357°

Longitude

-91.77932°

Altitude

1,511.835 km

Speed

7.151 km/s

True Right ascension

12h 16m 35s

True Declination

25° 49' 17"

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

23:41:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,704.219 km

Perigee altitude

1,489.033 km

Semi-major axis

7,974.763 km

Eccentricity

0.01349

Inclination

101.7666°

RAAN

189.9352°

Arg. of periapsis

352.8331°

True anomaly

33.67671°

Mean anomaly

32.8266°

Eccentric anomaly

33.25045°

Mean motion

3.04766 °/min

Orbital period

118.12 mins

BSTAR

0.00045918

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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.
15 mins	2026-02-02 21:53:43.260Z	40.572° NE	2026-02-02 22:00:43.260Z	93.793° ESE	26.477°	2026-02-02 22:08:43.260Z	152.568° SSE
16 mins	2026-02-02 23:49:43.260Z	10.189° NNE	2026-02-02 23:57:43.260Z	276.93° WNW	42.412°	2026-02-03 00:05:43.260Z	214.756° SW
8 mins	2026-02-03 01:47:43.260Z	339.854° N	2026-02-03 01:51:43.260Z	311.403° NW	16.108°	2026-02-03 01:55:43.260Z	284.123° WNW
14 mins	2026-02-03 09:11:43.260Z	127.584° SE	2026-02-03 09:17:43.260Z	66.698° ENE	36.624°	2026-02-03 09:25:43.260Z	353.768° N
14 mins	2026-02-03 11:07:43.260Z	201.015° SSW	2026-02-03 11:13:43.260Z	257.862° W	32.142°	2026-02-03 11:21:43.260Z	327.393° NNW
11 mins	2026-02-03 21:34:43.260Z	54.723° ENE	2026-02-03 21:39:43.260Z	92.379° ESE	20.549°	2026-02-03 21:45:43.260Z	135.18° 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, 12531 on other resources

View DELTA 1 DEB, 12531 on Heavens-Above

View DELTA 1 DEB, 12531 on Keep Track

View DELTA 1 DEB, 12531 on Celestrak

View DELTA 1 DEB, 12531 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, 12531

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-02-02T09:33:19.829Z)

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, 12531 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago