DELTA 1 DEB, 12581

Orbit data source: Space-Track

DELTA 1 DEB, 12581 is space debris in LEO 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/12581?theme=dark&initialShowStats=false

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Identifier

12581, 1976-077DZ

Orbit

LEO

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

Small (<0.1 m²)

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Last TLE update: 3 days ago

TLE from 3 days ago

0 DELTA 1 DEB
1 12581U 76077DZ  26060.16559543 -.00000035  00000-0  69983-4 0  9994
2 12581 102.4723 307.1913 0381754 326.6689 189.6030 11.70247956 52758

Epoch: 2026-03-01T03:58Z

TLE epoch observation values (Epoch: 2026-03-01T03:58:27.445Z)

Latitude

23.83307°

Longitude

-85.81861°

Altitude

2,128.164 km

Speed

6.718 km/s

True Right ascension

08h 51m 05s

True Declination

23° 43' 36"

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

10:09:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,127.33 km

Perigee altitude

1,501.811 km

Semi-major axis

8,192.707 km

Eccentricity

0.03818

Inclination

102.4723°

RAAN

307.1913°

Arg. of periapsis

326.6689°

True anomaly

188.9061°

Mean anomaly

189.603°

Eccentric anomaly

189.25136°

Mean motion

2.92686 °/min

Orbital period

123 mins

BSTAR

0.000069983

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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.
16 mins	2026-03-04 07:34:25.793Z	359.56° N	2026-03-04 07:42:25.793Z	312.182° NW	23.588°	2026-03-04 07:50:25.793Z	265.19° W
8 mins	2026-03-04 13:24:25.793Z	60.279° ENE	2026-03-04 13:27:25.793Z	40.954° NE	14.551°	2026-03-04 13:32:25.793Z	10.653° NNE
17 mins	2026-03-04 15:18:25.793Z	133.628° SE	2026-03-04 15:25:25.793Z	69.457° E	39.738°	2026-03-04 15:35:25.793Z	348.893° N
15 mins	2026-03-04 17:20:25.793Z	208.131° SW	2026-03-04 17:26:25.793Z	261.267° W	30.377°	2026-03-04 17:35:25.793Z	326.68° NNW
19 mins	2026-03-05 04:10:25.793Z	35.3° NE	2026-03-05 04:19:25.793Z	98.99° ESE	33.753°	2026-03-05 04:29:25.793Z	164.833° S
11 mins	2026-03-05 06:10:25.793Z	9.672° NNE	2026-03-05 06:19:25.793Z	305.996° NW	40.599°	2026-03-05 06:21:25.793Z	269.607° 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, 12581 on other resources

View DELTA 1 DEB, 12581 on Heavens-Above

View DELTA 1 DEB, 12581 on Keep Track

View DELTA 1 DEB, 12581 on Celestrak

View DELTA 1 DEB, 12581 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, 12581

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: 2026-03-01T03:58:27.445Z)

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, 12581 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago