DELTA 1 DEB, 21515

Orbit data source: Space-Track

DELTA 1 DEB, 21515 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 src="https://www.satcat.com/sats-embedded/21515?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21515?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21515, 1975-052GL

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: 1 day ago

TLE from 1 day ago

0 DELTA 1 DEB
1 21515U 75052GL  26081.81911072 -.00000547  00000-0 -14519-2 0  9999
2 21515  99.7082 140.8486 0273848  69.5661 354.5450 12.98732887651471

Epoch: 2026-03-22T19:39Z

TLE epoch observation values (Epoch: 2026-03-22T19:39:31.166Z)

Latitude

62.27276°

Longitude

6.75581°

Altitude

1,069.241 km

Speed

7.423 km/s

True Right ascension

08h 07m 49s

True Declination

62° 08' 13"

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

01:28:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,473.717 km

Perigee altitude

1,055.137 km

Semi-major axis

7,642.564 km

Eccentricity

0.02738

Inclination

99.7082°

RAAN

140.8486°

Arg. of periapsis

69.5661°

True anomaly

354.23618°

Mean anomaly

354.545°

Eccentric anomaly

354.39166°

Mean motion

3.24851 °/min

Orbital period

110.82 mins

BSTAR

-0.0014519

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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.
11 mins	2026-03-24 02:53:48.118Z	131.296° SE	2026-03-24 02:59:48.118Z	58.99° ENE	32.341°	2026-03-24 03:04:48.118Z	2.346° NNE
9 mins	2026-03-24 04:44:48.118Z	211.811° SW	2026-03-24 04:48:48.118Z	263.497° W	28.315°	2026-03-24 04:53:48.118Z	321.911° NNW
12 mins	2026-03-24 16:19:48.118Z	29.567° NE	2026-03-24 16:24:48.118Z	109.511° ESE	39.992°	2026-03-24 16:31:48.118Z	179.522° S
9 mins	2026-03-24 18:09:48.118Z	339.385° N	2026-03-24 18:13:48.118Z	292.607° NW	24.464°	2026-03-24 18:18:48.118Z	246.259° 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, 21515 on other resources

View DELTA 1 DEB, 21515 on Heavens-Above

View DELTA 1 DEB, 21515 on Keep Track

View DELTA 1 DEB, 21515 on Celestrak

View DELTA 1 DEB, 21515 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, 21515

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2026-03-22T19:39:31.166Z)

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, 21515 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago