DELTA 1 DEB, 21273

Orbit data source: Space-Track

DELTA 1 DEB, 21273 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/21273?theme=dark&initialShowStats=false

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Identifier

21273, 1975-052J

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, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 DELTA 1 DEB
1 21273U 75052J   26242.48147162 -.00000000  00000-0  78242-4 0  9991
2 21273  99.6788  81.2627 0036865  77.4951 348.6807 13.37960745503314

Epoch: 2026-08-30T11:33Z

TLE epoch observation values (Epoch: 2026-08-30T11:33:19.147Z)

Latitude

64.40222°

Longitude

-91.48675°

Altitude

1,100.81 km

Speed

7.321 km/s

True Right ascension

04h 02m 04s

True Declination

64° 16' 27"

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

11:03:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,141.822 km

Perigee altitude

1,086.581 km

Semi-major axis

7,492.339 km

Eccentricity

0.00369

Inclination

99.6788°

RAAN

81.2627°

Arg. of periapsis

77.4951°

True anomaly

348.59741°

Mean anomaly

348.6807°

Eccentric anomaly

348.63909°

Mean motion

3.3467 °/min

Orbital period

107.57 mins

BSTAR

0.000078242

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

DELTA 1 DEB, 21374

DELTA 1 DEB, 21448

DELTA 1 DEB, 21340 (Decayed)

DELTA 1 DEB, 21464

DELTA 1 DEB, 21508 (Decayed)

DELTA 1 DEB, 37628 (Decayed)

DELTA 1 DEB, 21969

DELTA 1 DEB, 35535

DELTA 1 DEB, 21376 (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.
12 mins	2026-08-31 02:11:17.543Z	17.653° NNE	2026-08-31 02:16:17.543Z	60.742° ENE	44.378°	2026-08-31 02:23:17.543Z	192.549° SSW
6 mins	2026-08-31 03:59:17.543Z	330.062° NNW	2026-08-31 04:02:17.543Z	298.503° NW	17.454°	2026-08-31 04:05:17.543Z	268.941° W
10 mins	2026-08-31 12:29:17.543Z	130.996° SE	2026-08-31 12:34:17.543Z	62.483° ENE	34.815°	2026-08-31 12:39:17.543Z	1.651° NNE
9 mins	2026-08-31 14:16:17.543Z	213.958° SW	2026-08-31 14:20:17.543Z	264.194° W	27.497°	2026-08-31 14:25:17.543Z	320.783° 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, 21273 on other resources

View DELTA 1 DEB, 21273 on Heavens-Above

View DELTA 1 DEB, 21273 on Keep Track

View DELTA 1 DEB, 21273 on Celestrak

View DELTA 1 DEB, 21273 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, 21273

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-08-30T11:33:19.147Z)

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, 21273 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago