DELTA 1 DEB, 21566

Orbit data source: Space-Track

DELTA 1 DEB, 21566 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/21566?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21566, 1975-052HL

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

Small (<0.1 m²)

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Last TLE update: 3 days ago

TLE from 3 days ago

0 DELTA 1 DEB
1 21566U 75052HL  26029.56545411  .00000185  00000-0  72408-3 0  9997
2 21566  99.5842  56.7879 0325395  88.6019  40.6317 12.83879092625878

Epoch: 2026-01-29T13:34Z

TLE epoch observation values (Epoch: 2026-01-29T13:34:15.235Z)

Latitude

47.46779°

Longitude

-85.0403°

Altitude

1,146.451 km

Speed

7.372 km/s

True Right ascension

16h 29m 21s

True Declination

47° 18' 19"

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

20:01:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,573.894 km

Perigee altitude

1,072.693 km

Semi-major axis

7,701.431 km

Eccentricity

0.03254

Inclination

99.5842°

RAAN

56.7879°

Arg. of periapsis

88.6019°

True anomaly

43.13628°

Mean anomaly

40.6317°

Eccentric anomaly

41.87621°

Mean motion

3.21134 °/min

Orbital period

112.1 mins

BSTAR

0.00072408

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

DELTA 1 DEB, 21511 (Decayed)

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	2026-02-02 01:11:52.736Z	148.874° SSE	2026-02-02 01:16:52.736Z	93.247° ESE	41.891°	2026-02-02 01:22:52.736Z	353.071° N
8 mins	2026-02-02 03:04:52.736Z	232.47° WSW	2026-02-02 03:07:52.736Z	262.194° W	18.648°	2026-02-02 03:12:52.736Z	311.49° NW
6 mins	2026-02-02 12:57:52.736Z	67.772° E	2026-02-02 13:00:52.736Z	96.937° ESE	16.011°	2026-02-02 13:03:52.736Z	123.211° SE
12 mins	2026-02-02 14:45:52.736Z	11.294° NNE	2026-02-02 14:51:52.736Z	243.27° WSW	44.125°	2026-02-02 14:57:52.736Z	202.144° SSW
5 mins	2026-02-02 16:38:52.736Z	324.022° NNW	2026-02-02 16:40:52.736Z	305.442° NW	13.603°	2026-02-02 16:43:52.736Z	278.995° WNW

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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, 21566 on other resources

View DELTA 1 DEB, 21566 on Heavens-Above

View DELTA 1 DEB, 21566 on Keep Track

View DELTA 1 DEB, 21566 on Celestrak

View DELTA 1 DEB, 21566 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, 21566

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-01-29T13:34:15.235Z)

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, 21566 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago