DELTA 1 DEB, 28979

Orbit data source: Space-Track

DELTA 1 DEB, 28979 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/28979?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

28979, 1976-077FU

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, 1.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 22 hours ago

TLE from 22 hours ago

0 DELTA 1 DEB
1 28979U 76077FU  26118.28992741 -.00000462  00000-0 -98318-2 0  9997
2 28979 102.0246 250.9345 0794167  18.4158 344.3927 10.95157003877983

Epoch: 2026-04-28T06:57Z

TLE epoch observation values (Epoch: 2026-04-28T06:57:29.728Z)

Latitude

0.00007°

Longitude

-69.70675°

Altitude

1,538.844 km

Speed

7.362 km/s

True Right ascension

16h 43m 44s

True Declination

0° 00' 00"

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

12:07:06

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,865.138 km

Perigee altitude

1,505.014 km

Semi-major axis

8,563.213 km

Eccentricity

0.07942

Inclination

102.0246°

RAAN

250.9345°

Arg. of periapsis

18.4158°

True anomaly

341.6877°

Mean anomaly

344.3927°

Eccentric anomaly

343.06746°

Mean motion

2.73898 °/min

Orbital period

131.44 mins

BSTAR

-0.0098318

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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.
15 mins	2026-04-29 07:11:57.261Z	117.892° SE	2026-04-29 07:18:57.261Z	59.708° ENE	30.061°	2026-04-29 07:26:57.261Z	356.524° N
15 mins	2026-04-29 09:20:57.261Z	190.038° SSW	2026-04-29 09:27:57.261Z	262.243° W	36.462°	2026-04-29 09:35:57.261Z	331.38° NNW
25 mins	2026-04-29 20:50:57.261Z	28.326° NE	2026-04-29 21:01:57.261Z	105.509° ESE	39.381°	2026-04-29 21:15:57.261Z	178.186° S
23 mins	2026-04-29 22:59:57.261Z	5.971° NNE	2026-04-29 23:09:57.261Z	298.417° NW	37.079°	2026-04-29 23:22:57.261Z	231.62° WSW
7 mins	2026-04-30 01:12:57.261Z	336.053° NNW	2026-04-30 01:15:57.261Z	320.051° NNW	12.941°	2026-04-30 01:19:57.261Z	300.749° NW

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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, 28979 on other resources

View DELTA 1 DEB, 28979 on Heavens-Above

View DELTA 1 DEB, 28979 on Keep Track

View DELTA 1 DEB, 28979 on Celestrak

View DELTA 1 DEB, 28979 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, 28979

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-04-28T06:57:29.728Z)

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, 28979 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 22 hours ago