DELTA 1 DEB, 21279

Orbit data source: Space-Track

DELTA 1 DEB, 21279 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 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/21279?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21279, 1975-052Q

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 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)

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Last TLE update: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 DEB
1 21279U 75052Q   26182.44796556  .00000043  00000-0  11828-3 0  9995
2 21279  99.4529 341.7995 0055973  40.5359  23.9390 13.57601977740984

Epoch: 2026-07-01T10:45Z

TLE epoch observation values (Epoch: 2026-07-01T10:45:04.224Z)

Latitude

63.22574°

Longitude

-118.13639°

Altitude

1,017.276 km

Speed

7.368 km/s

True Right ascension

21h 30m 32s

True Declination

63° 05' 31"

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

10:16:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,083.229 km

Perigee altitude

1,000.167 km

Semi-major axis

7,419.835 km

Eccentricity

0.0056

Inclination

99.4529°

RAAN

341.7995°

Arg. of periapsis

40.5359°

True anomaly

24.20093°

Mean anomaly

23.939°

Eccentric anomaly

24.0698°

Mean motion

3.39588 °/min

Orbital period

106.01 mins

BSTAR

0.00011828

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB, 21280

DELTA 1 DEB, 21345

DELTA 1 DEB, 21597 (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.
12 mins	2026-07-01 23:24:16.448Z	18.681° NNE	2026-07-01 23:30:16.448Z	126.044° SE	43.837°	2026-07-01 23:36:16.448Z	189.003° SSW
6 mins	2026-07-02 01:11:16.448Z	330.144° NNW	2026-07-02 01:14:16.448Z	296.722° NW	18.12°	2026-07-02 01:17:16.448Z	265.708° W
8 mins	2026-07-02 09:35:16.448Z	113.652° SE	2026-07-02 09:39:16.448Z	55.667° ENE	27.851°	2026-07-02 09:43:16.448Z	9.228° NNE
9 mins	2026-07-02 11:19:16.448Z	202.85° SW	2026-07-02 11:23:16.448Z	262.683° W	32.515°	2026-07-02 11:28:16.448Z	326.896° NNW
9 mins	2026-07-02 22:26:16.448Z	48.689° ENE	2026-07-02 22:30:16.448Z	95.882° ESE	23.599°	2026-07-02 22:35:16.448Z	148.111° SSE

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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, 21279 on other resources

View DELTA 1 DEB, 21279 on Heavens-Above

View DELTA 1 DEB, 21279 on Keep Track

View DELTA 1 DEB, 21279 on Celestrak

View DELTA 1 DEB, 21279 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, 21279

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-07-01T10:45:04.224Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 21279 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago