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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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

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 DELTA 1 DEB
1 21377U 75052CX  26078.95411316  .00001148  00000-0  20065-2 0  9991
2 21377 100.3014  88.2496 0223963 236.6580 189.9818 13.36510809681592

Epoch: 2026-03-19T22:53Z

TLE epoch observation values (Epoch: 2026-03-19T22:53:55.377Z)

Latitude

64.27795°

Longitude

-94.77696°

Altitude

1,298.853 km

Speed

7.133 km/s

True Right ascension

04h 24m 47s

True Declination

64° 09' 10"

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

09:57:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,287.577 km

Perigee altitude

951.731 km

Semi-major axis

7,497.791 km

Eccentricity

0.0224

Inclination

100.3014°

RAAN

88.2496°

Arg. of periapsis

236.658°

True anomaly

189.5489°

Mean anomaly

189.9818°

Eccentric anomaly

189.76418°

Mean motion

3.34305 °/min

Orbital period

107.69 mins

BSTAR

0.0020065

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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.
6 mins	2026-03-20 11:48:17.251Z	57.869° ENE	2026-03-20 11:51:17.251Z	83.867° E	13.771°	2026-03-20 11:54:17.251Z	112.201° ESE
12 mins	2026-03-20 13:33:17.251Z	15.528° NNE	2026-03-20 13:39:17.251Z	199.139° SSW	44.504°	2026-03-20 13:45:17.251Z	197.717° SSW
6 mins	2026-03-20 15:21:17.251Z	330.911° NNW	2026-03-20 15:24:17.251Z	301.426° NW	16.739°	2026-03-20 15:27:17.251Z	273.198° WNW
12 mins	2026-03-20 23:50:17.251Z	139.08° SSE	2026-03-20 23:55:17.251Z	82.721° E	39.647°	2026-03-21 00:02:17.251Z	354.388° N
11 mins	2026-03-21 01:37:17.251Z	215.091° SW	2026-03-21 01:42:17.251Z	267.557° W	26.408°	2026-03-21 01:48:17.251Z	322.074° 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: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-03-19T22:53:55.377Z)

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: 6 hours ago