DELTA 1 DEB, 21276

Orbit data source: Space-Track

DELTA 1 DEB, 21276 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/21276?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21276, 1975-052M

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, 1.2 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 20 hours ago

TLE from 20 hours ago

0 DELTA 1 DEB
1 21276U 75052M   26031.71067655  .00000024  00000-0  13198-3 0  9997
2 21276 100.0216 293.7185 0046755  74.6730 346.6783 13.35563314693514

Epoch: 2026-01-31T17:03Z

TLE epoch observation values (Epoch: 2026-01-31T17:03:22.453Z)

Latitude

59.7678°

Longitude

-110.61442°

Altitude

1,101.767 km

Speed

7.324 km/s

True Right ascension

18h 24m 38s

True Declination

59° 37' 29"

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

15:09:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,158.262 km

Perigee altitude

1,088.117 km

Semi-major axis

7,501.326 km

Eccentricity

0.00468

Inclination

100.0216°

RAAN

293.7185°

Arg. of periapsis

74.673°

True anomaly

346.55414°

Mean anomaly

346.6783°

Eccentric anomaly

346.61629°

Mean motion

3.34069 °/min

Orbital period

107.76 mins

BSTAR

0.00013198

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

DELTA 1 DEB, 21321 (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	2026-02-01 16:14:56.400Z	127.232° SE	2026-02-01 16:20:56.400Z	61.181° ENE	30.297°	2026-02-01 16:25:56.400Z	4.712° NNE
11 mins	2026-02-01 18:01:56.400Z	199.042° SSW	2026-02-01 18:06:56.400Z	262.713° W	32.456°	2026-02-01 18:12:56.400Z	329.089° NNW
10 mins	2026-02-02 05:19:56.400Z	40.465° NE	2026-02-02 05:24:56.400Z	99.824° ESE	28.379°	2026-02-02 05:29:56.400Z	155.036° SSE
11 mins	2026-02-02 07:05:56.400Z	357.931° N	2026-02-02 07:10:56.400Z	296.127° NW	34.503°	2026-02-02 07:16:56.400Z	226.162° 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, 21276 on other resources

View DELTA 1 DEB, 21276 on Heavens-Above

View DELTA 1 DEB, 21276 on Keep Track

View DELTA 1 DEB, 21276 on Celestrak

View DELTA 1 DEB, 21276 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, 21276

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-01-31T17:03:22.453Z)

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, 21276 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 20 hours ago