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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Iframe URL

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: 7 hours ago

TLE from 7 hours ago

0 DELTA 1 DEB
1 13531U 76077ED  26304.70680294 -.00000013  00000-0  32621-3 0  9993
2 13531 102.7728 283.4134 0141761 293.0888 243.7694 12.17167530972663

Epoch: 2026-10-31T16:57Z

TLE epoch observation values (Epoch: 2026-10-31T16:57:47.774Z)

Latitude

4.39619°

Longitude

169.94949°

Altitude

1,658.232 km

Speed

7.022 km/s

True Right ascension

06h 57m 37s

True Declination

4° 22' 23"

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

19:12:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,715.688 km

Perigee altitude

1,489.418 km

Semi-major axis

7,980.69 km

Eccentricity

0.01418

Inclination

102.7728°

RAAN

283.4134°

Arg. of periapsis

293.0888°

True anomaly

242.3237°

Mean anomaly

243.7694°

Eccentric anomaly

243.04541°

Mean motion

3.04427 °/min

Orbital period

118.26 mins

BSTAR

0.00032621

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

DELTA 1 DEB, 14472

DELTA 1 DEB, 13529

DELTA 1 DEB, 10657

DELTA 1 DEB, 10839 (Decayed)

DELTA 1 DEB *, 18466 (Decayed)

DELTA 1 DEB, 10827 (Decayed)

DELTA 1 DEB, 10753 (Decayed)

DELTA 1 DEB, 20309

DELTA 1 DEB, 19858 (Decayed)

DELTA 1 DEB, 16999 (Decayed)

DELTA 1 DEB, 40760

DELTA 1 DEB, 18600

DELTA 1 DEB, 10658

DELTA 1 DEB, 12541 (Decayed)

DELTA 1 DEB, 18540

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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	2026-10-31 23:57:58.807Z	212.57° SW	2026-11-01 00:04:58.807Z	267.082° W	27.042°	2026-11-01 00:11:58.807Z	318.293° NNW
15 mins	2026-11-01 10:24:58.807Z	41.676° NE	2026-11-01 10:31:58.807Z	95.993° ESE	31.613°	2026-11-01 10:39:58.807Z	155.794° SSE
17 mins	2026-11-01 12:19:58.807Z	11.962° NNE	2026-11-01 12:27:58.807Z	306.489° NW	64.434°	2026-11-01 12:36:58.807Z	217.412° SW
9 mins	2026-11-01 14:17:58.807Z	345.873° N	2026-11-01 14:21:58.807Z	318.937° NNW	17.195°	2026-11-01 14:26:58.807Z	284.956° WNW
7 mins	2026-11-01 19:51:58.807Z	63.331° ENE	2026-11-01 19:54:58.807Z	43.017° NE	14.458°	2026-11-01 19:58:58.807Z	16.319° NNE
16 mins	2026-11-01 21:41:58.807Z	134.018° SE	2026-11-01 21:48:58.807Z	63.918° ENE	56.467°	2026-11-01 21:57:58.807Z	348.94° N

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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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-10-31T16:57:47.774Z)

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: 7 hours ago