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: 3 days ago

TLE from 3 days ago

0 DELTA 1 DEB
1 13531U 76077ED  26171.38979727  .00000016  00000-0  60045-3 0  9994
2 13531 102.7528 149.6834 0141407 161.5320 357.0444 12.17159114956447

Epoch: 2026-06-20T09:21Z

TLE epoch observation values (Epoch: 2026-06-20T09:21:18.484Z)

Latitude

20.96357°

Longitude

-74.2986°

Altitude

1,494.386 km

Speed

7.169 km/s

True Right ascension

22h 18m 32s

True Declination

20° 51' 35"

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

13:18:29

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,715.442 km

Perigee altitude

1,489.736 km

Semi-major axis

7,980.726 km

Eccentricity

0.01414

Inclination

102.7528°

RAAN

149.6834°

Arg. of periapsis

161.532°

True anomaly

356.95935°

Mean anomaly

357.0444°

Eccentric anomaly

357.00203°

Mean motion

3.04424 °/min

Orbital period

118.26 mins

BSTAR

0.00060045

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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.
13 mins	2026-06-23 10:08:53.376Z	43.788° NE	2026-06-23 10:14:53.376Z	90.383° ESE	23.044°	2026-06-23 10:21:53.376Z	147.569° SSE
15 mins	2026-06-23 12:04:53.376Z	12.257° NNE	2026-06-23 12:11:53.376Z	295.393° NW	42.916°	2026-06-23 12:19:53.376Z	213.697° SW
7 mins	2026-06-23 14:02:53.376Z	340.526° N	2026-06-23 14:05:53.376Z	317.96° NNW	15.319°	2026-06-23 14:09:53.376Z	287.445° WNW
5 mins	2026-06-23 19:37:53.376Z	54.276° ENE	2026-06-23 19:39:53.376Z	40.581° NE	12.319°	2026-06-23 19:42:53.376Z	20.334° NNE
16 mins	2026-06-23 21:25:53.376Z	132.396° SE	2026-06-23 21:33:53.376Z	57.674° ENE	38.345°	2026-06-23 21:41:53.376Z	351.027° N
15 mins	2026-06-23 23:22:53.376Z	200.133° SSW	2026-06-23 23:29:53.376Z	263.462° W	32.258°	2026-06-23 23:37:53.376Z	326.343° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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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: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-20T09:21:18.484Z)

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: 3 days ago