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 (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)

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

TLE from 16 hours ago

0 DELTA 1 DEB
1 21279U 75052Q   25336.97604468  .00000119  00000-0  22236-3 0  9992
2 21279  99.4263 139.7393 0055220 212.8842 270.6574 13.57547490712424

Epoch: 2025-12-02T23:25Z

TLE epoch observation values (Epoch: 2025-12-02T23:25:30.260Z)

Latitude

56.01172°

Longitude

-89.50985°

Altitude

1,053.627 km

Speed

7.331 km/s

True Right ascension

22h 15m 40s

True Declination

55° 51' 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

13:11:16

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,082.869 km

Perigee altitude

1,000.922 km

Semi-major axis

7,420.033 km

Eccentricity

0.00552

Inclination

99.4263°

RAAN

139.7393°

Arg. of periapsis

212.8842°

True anomaly

270.02463°

Mean anomaly

270.6574°

Eccentric anomaly

270.34102°

Mean motion

3.39574 °/min

Orbital period

106.02 mins

BSTAR

0.00022236

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

DELTA 1 DEB, 21474 (Decayed)

DELTA 1 DEB, 21436 (Decayed)

DELTA 1 DEB, 21684 (Decayed)

DELTA 1 DEB, 21597 (Decayed)

DELTA 1 DEB, 21569 (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.
7 mins	2025-12-03 22:26:55.185Z	52.678° ENE	2025-12-03 22:30:55.185Z	92.519° ESE	16.263°	2025-12-03 22:33:55.185Z	123.465° SE
11 mins	2025-12-04 00:10:55.185Z	8.894° NNE	2025-12-04 00:15:55.185Z	290.573° WNW	43.714°	2025-12-04 00:21:55.185Z	204.741° SW
10 mins	2025-12-04 10:19:55.185Z	135.315° SSE	2025-12-04 10:23:55.185Z	79.711° E	37.629°	2025-12-04 10:29:55.185Z	357.786° N
9 mins	2025-12-04 12:04:55.185Z	217.466° SW	2025-12-04 12:08:55.185Z	262.994° W	24.582°	2025-12-04 12:13:55.185Z	317.968° 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, 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: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2025-12-02T23:25:30.260Z)

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: 16 hours ago