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   26002.15436545  .00000061  00000-0  19430-3 0  9994
2 21273  99.6948 212.4410 0035648 302.3811 186.4419 13.37930178471175

Epoch: 2026-01-02T03:42Z

TLE epoch observation values (Epoch: 2026-01-02T03:42:17.174Z)

Latitude

50.31133°

Longitude

-113.11066°

Altitude

1,151.478 km

Speed

7.269 km/s

True Right ascension

02h 57m 02s

True Declination

50° 09' 04"

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

11:20:18

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,141.026 km

Perigee altitude

1,087.608 km

Semi-major axis

7,492.454 km

Eccentricity

0.00356

Inclination

99.6948°

RAAN

212.441°

Arg. of periapsis

302.3811°

True anomaly

186.39627°

Mean anomaly

186.4419°

Eccentric anomaly

186.41907°

Mean motion

3.34663 °/min

Orbital period

107.57 mins

BSTAR

0.0001943

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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.
8 mins	2026-01-02 12:12:18.073Z	98.266° ESE	2026-01-02 12:16:18.073Z	59.039° ENE	19.152°	2026-01-02 12:20:18.073Z	19.325° NNE
12 mins	2026-01-02 13:56:18.073Z	171.736° S	2026-01-02 14:01:18.073Z	223.411° SW	43.753°	2026-01-02 14:08:18.073Z	341.888° N
7 mins	2026-01-03 01:15:18.073Z	59.633° ENE	2026-01-03 01:18:18.073Z	88.53° E	16.67°	2026-01-03 01:22:18.073Z	126.391° SE
11 mins	2026-01-03 03:00:18.073Z	10.541° NNE	2026-01-03 03:05:18.073Z	277.782° WNW	44.396°	2026-01-03 03:11:18.073Z	202.938° SW
5 mins	2026-01-03 04:48:18.073Z	323.435° NNW	2026-01-03 04:50:18.073Z	304.518° NW	14.2°	2026-01-03 04:53:18.073Z	277.583° WNW

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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: 2026-01-02T03:42:17.174Z)

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