DELTA 1 DEB, 21387

Orbit data source: Space-Track

DELTA 1 DEB, 21387 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/21387?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21387, 1975-052DH

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)

Expand to show TLE details & history
Last TLE update: 22 hours ago

TLE from 22 hours ago

0 DELTA 1 DEB
1 21387U 75052DH  26078.28220296  .00000256  00000-0  49145-3 0  9993
2 21387  99.4874  13.6879 0046030 123.5367  31.8631 13.46329399707609

Epoch: 2026-03-19T06:46Z

TLE epoch observation values (Epoch: 2026-03-19T06:46:22.335Z)

Latitude

23.99087°

Longitude

-80.49583°

Altitude

1,059.446 km

Speed

7.339 km/s

True Right ascension

13h 11m 43s

True Declination

23° 52' 07"

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

09:56:11

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,117.434 km

Perigee altitude

1,048.745 km

Semi-major axis

7,461.227 km

Eccentricity

0.0046

Inclination

99.4874°

RAAN

13.6879°

Arg. of periapsis

123.5367°

True anomaly

32.14291°

Mean anomaly

31.8631°

Eccentric anomaly

32.00287°

Mean motion

3.36766 °/min

Orbital period

106.9 mins

BSTAR

0.00049145

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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.
10 mins	2026-03-20 07:35:39.229Z	39.592° NE	2026-03-20 07:40:39.229Z	101.008° ESE	27.857°	2026-03-20 07:45:39.229Z	155.888° SSE
10 mins	2026-03-20 09:21:39.229Z	352.853° N	2026-03-20 09:25:39.229Z	298.654° NW	33.446°	2026-03-20 09:31:39.229Z	226.047° WSW
6 mins	2026-03-20 17:52:39.229Z	81.547° E	2026-03-20 17:54:39.229Z	60.869° ENE	16.412°	2026-03-20 17:58:39.229Z	21.676° NNE
11 mins	2026-03-20 19:34:39.229Z	166.881° S	2026-03-20 19:39:39.229Z	270.356° WNW	44.873°	2026-03-20 19:45:39.229Z	344.198° N

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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, 21387 on other resources

View DELTA 1 DEB, 21387 on Heavens-Above

View DELTA 1 DEB, 21387 on Keep Track

View DELTA 1 DEB, 21387 on Celestrak

View DELTA 1 DEB, 21387 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, 21387

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 22 hours ago

TLE from 22 hours ago

TLE epoch observation values (Epoch: 2026-03-19T06:46:22.335Z)

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, 21387 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 22 hours ago