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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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 (49 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)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 12531U 76077DL  25348.01009545  .00000102  00000-0  13537-2 0  9999
2 12531 101.7623 143.1639 0135110  83.9556  39.2798 12.18501041 24689

Epoch: 2025-12-14T00:14Z

TLE epoch observation values (Epoch: 2025-12-14T00:14:32.246Z)

Latitude

54.13538°

Longitude

-106.74409°

Altitude

1,524.913 km

Speed

7.145 km/s

True Right ascension

22h 39m 16s

True Declination

53° 59' 16"

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

02:14:07

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,704.413 km

Perigee altitude

1,488.918 km

Semi-major axis

7,974.802 km

Eccentricity

0.01351

Inclination

101.7623°

RAAN

143.1639°

Arg. of periapsis

83.9556°

True anomaly

40.27293°

Mean anomaly

39.2798°

Eccentric anomaly

39.77506°

Mean motion

3.04764 °/min

Orbital period

118.12 mins

BSTAR

0.0013537

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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	2025-12-15 09:11:22.703Z	127.474° SE	2025-12-15 09:19:22.703Z	58.666° ENE	33.718°	2025-12-15 09:26:22.703Z	356.965° N
14 mins	2025-12-15 11:08:22.703Z	193.454° SSW	2025-12-15 11:15:22.703Z	265.022° W	35.184°	2025-12-15 11:22:22.703Z	328.23° NNW
8 mins	2025-12-15 21:36:22.703Z	64.264° ENE	2025-12-15 21:40:22.703Z	94.915° ESE	15.705°	2025-12-15 21:44:22.703Z	123.527° SE
16 mins	2025-12-15 23:29:22.703Z	18.52° NNE	2025-12-15 23:36:22.703Z	47.188° ENE	44.711°	2025-12-15 23:45:22.703Z	197.718° SSW
10 mins	2025-12-16 01:27:22.703Z	344.14° N	2025-12-16 01:31:22.703Z	311.114° NW	21.031°	2025-12-16 01:37:22.703Z	264.002° W

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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: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2025-12-14T00:14:32.246Z)

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: 1 day ago