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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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 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.050 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 DELTA 1 DEB
1 21361U 75052CF  26304.51224758  .00000786  00000-0  46818-2 0  9991
2 21361  99.5685 150.9070 0699769 321.5058  59.4087 12.03713147 19012

Epoch: 2026-10-31T12:17Z

TLE epoch observation values (Epoch: 2026-10-31T12:17:38.190Z)

Latitude

27.73314°

Longitude

-78.3783°

Altitude

1,411.721 km

Speed

7.27 km/s

True Right ascension

09h 43m 23s

True Declination

27° 36' 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

03:12:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

2,224.361 km

Perigee altitude

1,099.148 km

Semi-major axis

8,039.891 km

Eccentricity

0.06998

Inclination

99.5685°

RAAN

150.907°

Arg. of periapsis

321.5058°

True anomaly

66.61323°

Mean anomaly

59.4087°

Eccentric anomaly

62.98046°

Mean motion

3.0107 °/min

Orbital period

119.57 mins

BSTAR

0.0046818

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

DELTA 1 DEB, 21382 (Decayed)

DELTA 1 DEB, 21379 (Decayed)

DELTA 1 DEB, 21297

DELTA 1 DEB, 21349 (Decayed)

DELTA 1 DEB, 21271

DELTA 1 DEB, 21436 (Decayed)

DELTA 1 DEB, 21564 (Decayed)

DELTA 1 DEB, 21335 (Decayed)

DELTA 1 DEB, 21522 (Decayed)

DELTA 1 DEB, 21348 (Decayed)

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21321 (Decayed)

DELTA 1 DEB, 21323 (Decayed)

DELTA 1 DEB, 21495 (Decayed)

DELTA 1 DEB, 21510 (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	2026-11-01 12:13:34.017Z	110.794° ESE	2026-11-01 12:20:34.017Z	52.825° ENE	29.612°	2026-11-01 12:27:34.017Z	3.759° NNE
16 mins	2026-11-01 14:10:34.017Z	179.768° S	2026-11-01 14:17:34.017Z	277.083° WNW	65.084°	2026-11-01 14:26:34.017Z	341.072° N
16 mins	2026-11-02 00:44:34.017Z	42.531° NE	2026-11-02 00:52:34.017Z	87.729° E	23.74°	2026-11-02 01:00:34.017Z	132.561° SE
22 mins	2026-11-02 02:40:34.017Z	15.333° NNE	2026-11-02 02:51:34.017Z	158.075° S	84.823°	2026-11-02 03:02:34.017Z	195.851° SSW
17 mins	2026-11-02 04:39:34.017Z	352.565° N	2026-11-02 04:47:34.017Z	302.659° NW	30.436°	2026-11-02 04:56:34.017Z	252.556° W

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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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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: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-10-31T12:17:38.190Z)

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: 19 hours ago