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: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 DEB
1 21565U 75052HK  26124.60764992  .00000187  00000-0  71713-3 0  9994
2 21565  99.8279 261.0655 0364638  62.3216 316.6476 12.81834792628576

Epoch: 2026-05-04T14:35Z

TLE epoch observation values (Epoch: 2026-05-04T14:35:00.953Z)

Latitude

15.74498°

Longitude

177.03205°

Altitude

1,136.634 km

Speed

7.379 km/s

True Right ascension

17h 13m 07s

True Declination

15° 39' 36"

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

10:38:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,612.619 km

Perigee altitude

1,050.374 km

Semi-major axis

7,709.633 km

Eccentricity

0.03646

Inclination

99.8279°

RAAN

261.0655°

Arg. of periapsis

62.3216°

True anomaly

313.68231°

Mean anomaly

316.6476°

Eccentric anomaly

315.17481°

Mean motion

3.20621 °/min

Orbital period

112.28 mins

BSTAR

0.00071713

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Other satellites on launch #52 in the year 1975 (1975-06-12 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.
8 mins	2026-05-05 07:31:44.361Z	101.542° ESE	2026-05-05 07:35:44.361Z	58.121° ENE	20.432°	2026-05-05 07:39:44.361Z	16.068° NNE
11 mins	2026-05-05 09:20:44.361Z	181.635° SSW	2026-05-05 09:25:44.361Z	255.196° W	40.895°	2026-05-05 09:31:44.361Z	336.854° NNW
11 mins	2026-05-05 21:05:44.361Z	41.578° NE	2026-05-05 21:10:44.361Z	104.966° ESE	31.82°	2026-05-05 21:16:44.361Z	161.734° S
12 mins	2026-05-05 22:55:44.361Z	355.332° N	2026-05-05 23:00:44.361Z	297.913° NW	33.447°	2026-05-05 23:07:44.361Z	228.172° 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, 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: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-05-04T14:35:00.953Z)

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: 12 hours ago