DELTA 1 DEB, 21565

Orbit data source: Space-Track

DELTA 1 DEB, 21565 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/21565?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21565, 1975-052HK

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, 0.2 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21565U 75052HK  26030.89481256  .00001676  00000-0  55201-2 0  9997
2 21565  99.8201 178.9729 0368688 266.2157 251.2670 12.81655984616567

Epoch: 2026-01-30T21:28Z

TLE epoch observation values (Epoch: 2026-01-30T21:28:31.805Z)

Latitude

26.07121°

Longitude

-88.452°

Altitude

1,438.368 km

Speed

7.098 km/s

True Right ascension

00h 15m 13s

True Declination

25° 56' 51"

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

15:09:29

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,616.485 km

Perigee altitude

1,047.942 km

Semi-major axis

7,710.35 km

Eccentricity

0.03687

Inclination

99.8201°

RAAN

178.9729°

Arg. of periapsis

266.2157°

True anomaly

247.32745°

Mean anomaly

251.267°

Eccentric anomaly

249.29106°

Mean motion

3.20577 °/min

Orbital period

112.3 mins

BSTAR

0.0055201

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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.
15 mins	2026-02-01 21:58:54.483Z	24.255° NE	2026-02-01 22:06:54.483Z	93.431° ESE	38.512°	2026-02-01 22:13:54.483Z	171.569° S
13 mins	2026-02-01 23:50:54.483Z	355.971° N	2026-02-01 23:56:54.483Z	304.751° NW	31.163°	2026-02-02 00:03:54.483Z	238.651° WSW
15 mins	2026-02-02 08:42:54.483Z	129.946° SE	2026-02-02 08:49:54.483Z	55.571° ENE	36.317°	2026-02-02 08:57:54.483Z	355.488° N
14 mins	2026-02-02 10:33:54.483Z	201.96° SSW	2026-02-02 10:39:54.483Z	263.298° W	34.013°	2026-02-02 10:47:54.483Z	331.085° 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, 21565 on other resources

View DELTA 1 DEB, 21565 on Heavens-Above

View DELTA 1 DEB, 21565 on Keep Track

View DELTA 1 DEB, 21565 on Celestrak

View DELTA 1 DEB, 21565 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, 21565

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-01-30T21:28:31.805Z)

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, 21565 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago