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

Medium (>0.1 m² and <1 m²)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 12531U 76077DL  26254.33204552  .00000014  00000-0  52751-3 0  9990
2 12531 101.8074  35.3854 0135914 314.7560  72.7529 12.18519161 57731

Epoch: 2026-09-11T07:58Z

TLE epoch observation values (Epoch: 2026-09-11T07:58:08.732Z)

Latitude

28.37595°

Longitude

-80.9598°

Altitude

1,571.373 km

Speed

7.098 km/s

True Right ascension

01h 55m 44s

True Declination

28° 14' 50"

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

16:33:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,704.977 km

Perigee altitude

1,488.201 km

Semi-major axis

7,974.726 km

Eccentricity

0.01359

Inclination

101.8074°

RAAN

35.3854°

Arg. of periapsis

314.756°

True anomaly

74.24769°

Mean anomaly

72.7529°

Eccentric anomaly

73.49956°

Mean motion

3.04768 °/min

Orbital period

118.12 mins

BSTAR

0.00052751

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

DELTA 1 DEB, 10750

DELTA 1 DEB, 10831

DELTA 1 DEB, 40753

DELTA 1 DEB *, 18466 (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.
12 mins	2026-09-13 07:16:51.598Z	95.258° ESE	2026-09-13 07:22:51.598Z	52.048° ENE	22.257°	2026-09-13 07:28:51.598Z	8.092° NNE
16 mins	2026-09-13 09:10:51.598Z	158.722° S	2026-09-13 09:17:51.598Z	20.788° NNE	86.628°	2026-09-13 09:26:51.598Z	343.298° N
9 mins	2026-09-13 11:10:51.598Z	239.714° WSW	2026-09-13 11:14:51.598Z	271.074° WNW	19.081°	2026-09-13 11:19:51.598Z	307.346° NW
16 mins	2026-09-13 21:32:51.598Z	32.24° NE	2026-09-13 21:40:51.598Z	100.612° ESE	44.734°	2026-09-13 21:48:51.598Z	167.488° S
16 mins	2026-09-13 23:28:51.598Z	4.665° NNE	2026-09-13 23:36:51.598Z	293.965° NW	47.827°	2026-09-13 23:44:51.598Z	230.055° WSW

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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: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-09-11T07:58:08.732Z)

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: 2 days ago