DELTA 1 DEB, 13531

Orbit data source: Space-Track

DELTA 1 DEB, 13531 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/13531?theme=dark&initialShowStats=false

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Identifier

13531, 1976-077ED

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)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 DELTA 1 DEB
1 13531U 76077ED  26256.17739721 -.00000041  00000-0  40929-4 0  9992
2 13531 102.7644 234.7092 0142324  16.2705 357.8172 12.17165492966768

Epoch: 2026-09-13T04:15Z

TLE epoch observation values (Epoch: 2026-09-13T04:15:27.118Z)

Latitude

13.64416°

Longitude

175.53357°

Altitude

1,493.123 km

Speed

7.169 km/s

True Right ascension

15h 26m 17s

True Declination

13° 34' 22"

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

04:57:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,716.146 km

Perigee altitude

1,488.977 km

Semi-major axis

7,980.698 km

Eccentricity

0.01423

Inclination

102.7644°

RAAN

234.7092°

Arg. of periapsis

16.2705°

True anomaly

357.75396°

Mean anomaly

357.8172°

Eccentric anomaly

357.78569°

Mean motion

3.04426 °/min

Orbital period

118.26 mins

BSTAR

0.000040929

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

DELTA 1 DEB, 10761 (Decayed)

DELTA 1 DEB, 10874

DELTA 1 DEB, 10875

DELTA 1 DEB, 10829

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.
16 mins	2026-09-13 12:39:59.256Z	7.546° NNE	2026-09-13 12:47:59.256Z	299.757° NW	48.973°	2026-09-13 12:55:59.256Z	230.409° WSW
4 mins	2026-09-13 14:39:59.256Z	331.973° NNW	2026-09-13 14:41:59.256Z	318.556° NNW	11.809°	2026-09-13 14:43:59.256Z	305.403° NW
8 mins	2026-09-13 20:11:59.256Z	71.816° E	2026-09-13 20:14:59.256Z	48.237° ENE	17.412°	2026-09-13 20:19:59.256Z	11.261° NNE
15 mins	2026-09-13 22:02:59.256Z	148.124° SSE	2026-09-13 22:09:59.256Z	49.428° ENE	72.836°	2026-09-13 22:17:59.256Z	345.177° N
10 mins	2026-09-14 00:01:59.256Z	227.743° WSW	2026-09-14 00:05:59.256Z	262.132° W	23.095°	2026-09-14 00:11:59.256Z	311.017° NW
14 mins	2026-09-14 10:25:59.256Z	42.557° NE	2026-09-14 10:32:59.256Z	101.664° ESE	32.956°	2026-09-14 10:39:59.256Z	155.466° SSE
7 mins	2026-09-14 12:20:59.256Z	10.588° NNE	2026-09-14 12:27:59.256Z	318.68° NNW	59.302°	2026-09-14 12:27:59.256Z	318.68° 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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Check out DELTA 1 DEB, 13531 on other resources

View DELTA 1 DEB, 13531 on Heavens-Above

View DELTA 1 DEB, 13531 on Keep Track

View DELTA 1 DEB, 13531 on Celestrak

View DELTA 1 DEB, 13531 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, 13531

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-09-13T04:15:27.118Z)

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, 13531 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago