**DELTA 1 DEB *, 18591**

Orbit data source: Space-Track

DELTA 1 DEB *, 18591 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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https://www.satcat.com/sats-embedded/18591?theme=dark&initialShowStats=false

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Identifier

18591, 1976-077FD

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 (49 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 DELTA 1 DEB *
1 18591U 76077FD  25343.22324403  .00000541  00000-0  12816-1 0  9997
2 18591 100.9905  72.7132 1066754  71.1130 348.8996 10.60226808571670

Epoch: 2025-12-09T05:21Z

TLE epoch observation values (Epoch: 2025-12-09T05:21:28.284Z)

Latitude

55.80049°

Longitude

-102.38532°

Altitude

1,471.445 km

Speed

7.495 km/s

True Right ascension

03h 44m 46s

True Declination

55° 39' 18"

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

19:07:54

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

3,305.608 km

Perigee altitude

1,438.724 km

Semi-major axis

8,750.303 km

Eccentricity

0.10668

Inclination

100.9905°

RAAN

72.7132°

Arg. of periapsis

71.113°

True anomaly

346.19534°

Mean anomaly

348.8996°

Eccentric anomaly

347.58563°

Mean motion

2.6516 °/min

Orbital period

135.77 mins

BSTAR

0.012816

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

DELTA 1 DEB, 18677 (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.
11 mins	2025-12-09 21:28:58.874Z	345.925° N	2025-12-09 21:33:58.874Z	310.81° NW	17.652°	2025-12-09 21:39:58.874Z	272.961° WNW
9 mins	2025-12-10 03:53:58.874Z	86.692° E	2025-12-10 03:57:58.874Z	54.932° ENE	17.759°	2025-12-10 04:02:58.874Z	14.155° NNE
15 mins	2025-12-10 06:02:58.874Z	167.445° S	2025-12-10 06:10:58.874Z	280.206° WNW	44.407°	2025-12-10 06:17:58.874Z	340.934° N
19 mins	2025-12-10 17:54:58.874Z	36.944° NE	2025-12-10 18:01:58.874Z	95.746° ESE	33.804°	2025-12-10 18:13:58.874Z	168.347° S
17 mins	2025-12-10 20:08:58.874Z	358.386° N	2025-12-10 20:15:58.874Z	287.956° WNW	36.328°	2025-12-10 20:25:58.874Z	227.899° 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 *, 18591 on other resources

View DELTA 1 DEB *, 18591 on Heavens-Above

View DELTA 1 DEB *, 18591 on Keep Track

View DELTA 1 DEB *, 18591 on Celestrak

View DELTA 1 DEB *, 18591 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 *, 18591

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-12-09T05:21:28.284Z)

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 *, 18591 on other resources

Documentation

**DELTA 1 DEB *, 18591**

Expand to show TLE details & history
Last TLE update: 16 hours ago