DELTA 1 DEB, 21361

Orbit data source: Space-Track

DELTA 1 DEB, 21361 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/21361?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21361, 1975-052CF

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 (50 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: 3 weeks ago

TLE from 3 weeks ago

0 DELTA 1 DEB
1 21361U 75052CF  25297.77791894  .00001653  00000-0  89096-2 0  9998
2 21361  99.5937 234.2771 0737900 313.7256  68.8663 12.03585843131939

Epoch: 2025-10-24T18:40Z

TLE epoch observation values (Epoch: 2025-10-24T18:40:12.196Z)

Latitude

30.29561°

Longitude

-84.83107°

Altitude

1,493.944 km

Speed

7.196 km/s

True Right ascension

15h 14m 33s

True Declination

30° 09' 36"

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

17:20:41

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,255.626 km

Perigee altitude

1,069.015 km

Semi-major axis

8,040.458 km

Eccentricity

0.07379

Inclination

99.5937°

RAAN

234.2771°

Arg. of periapsis

313.7256°

True anomaly

76.99673°

Mean anomaly

68.8663°

Eccentric anomaly

72.90742°

Mean motion

3.01038 °/min

Orbital period

119.59 mins

BSTAR

0.0089096

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

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 42660 (Decayed)

DELTA 1 DEB, 21600 (Decayed)

DELTA 1 DEB, 21381 (Decayed)

DELTA 1 DEB, 21334 (Decayed)

DELTA 1 DEB, 21543 (Decayed)

DELTA 1 DEB, 21386

DELTA 1 DEB, 21323 (Decayed)

DELTA 1 DEB, 21474 (Decayed)

DELTA 1 DEB, 37629 (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.
14 mins	2025-11-12 21:26:13.433Z	233.844° WSW	2025-11-12 21:32:13.433Z	273.704° WNW	20.46°	2025-11-12 21:40:13.433Z	320.428° NNW
9 mins	2025-11-13 06:05:13.433Z	56.875° ENE	2025-11-13 06:09:13.433Z	78.743° E	14.45°	2025-11-13 06:14:13.433Z	107.329° ESE
21 mins	2025-11-13 07:58:13.433Z	19.306° NNE	2025-11-13 08:09:13.433Z	101.079° ESE	42.996°	2025-11-13 08:19:13.433Z	183.368° SSW
18 mins	2025-11-13 09:56:13.433Z	0.543° NNE	2025-11-13 10:06:13.433Z	298.282° NW	31.315°	2025-11-13 10:14:13.433Z	244.823° WSW
15 mins	2025-11-13 17:27:13.433Z	95.323° ESE	2025-11-13 17:34:13.433Z	48.907° ENE	24.153°	2025-11-13 17:42:13.433Z	3.833° NNE
20 mins	2025-11-13 19:21:13.433Z	161.258° S	2025-11-13 19:30:13.433Z	1.257° NNE	44.832°	2025-11-13 19:41:13.433Z	346.134° N

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, 21361 on other resources

View DELTA 1 DEB, 21361 on Heavens-Above

View DELTA 1 DEB, 21361 on Keep Track

View DELTA 1 DEB, 21361 on Celestrak

View DELTA 1 DEB, 21361 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, 21361

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 weeks ago

TLE from 3 weeks ago

TLE epoch observation values (Epoch: 2025-10-24T18:40:12.196Z)

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, 21361 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 weeks ago