DELTA 1 DEB, 21377

Orbit data source: Space-Track

DELTA 1 DEB, 21377 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/21377?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21377, 1975-052CX

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

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 DEB
1 21377U 75052CX  26190.99662500  .00000700  00000-0  12524-2 0  9997
2 21377 100.2964 201.4526 0222322 332.1665  53.5459 13.36789040696567

Epoch: 2026-07-09T23:55Z

TLE epoch observation values (Epoch: 2026-07-09T23:55:08.400Z)

Latitude

27.35052°

Longitude

-90.62682°

Altitude

1,027.828 km

Speed

7.387 km/s

True Right ascension

13h 04m 21s

True Declination

27° 12' 56"

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

00:12:21

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,285.282 km

Perigee altitude

951.943 km

Semi-major axis

7,496.75 km

Eccentricity

0.02223

Inclination

100.2964°

RAAN

201.4526°

Arg. of periapsis

332.1665°

True anomaly

55.62896°

Mean anomaly

53.5459°

Eccentric anomaly

54.58401°

Mean motion

3.34375 °/min

Orbital period

107.66 mins

BSTAR

0.0012524

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

DELTA 1 DEB, 21318 (Decayed)

DELTA 1 DEB, 26843

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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.
14 mins	2026-07-10 12:57:07.690Z	28.485° NE	2026-07-10 13:04:07.690Z	101.738° ESE	35.863°	2026-07-10 13:11:07.690Z	171.136° S
11 mins	2026-07-10 14:45:07.690Z	351.347° N	2026-07-10 14:50:07.690Z	291.88° WNW	31.588°	2026-07-10 14:56:07.690Z	234.516° WSW
8 mins	2026-07-10 23:18:07.690Z	102.082° ESE	2026-07-10 23:22:07.690Z	54.448° ENE	23.081°	2026-07-10 23:26:07.690Z	12.901° NNE
10 mins	2026-07-11 01:03:07.690Z	186.331° SSW	2026-07-11 01:07:07.690Z	249.099° W	39.814°	2026-07-11 01:13:07.690Z	334.507° 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, 21377 on other resources

View DELTA 1 DEB, 21377 on Heavens-Above

View DELTA 1 DEB, 21377 on Keep Track

View DELTA 1 DEB, 21377 on Celestrak

View DELTA 1 DEB, 21377 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, 21377

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: 2026-07-09T23:55:08.400Z)

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, 21377 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago