DELTA 1 DEB, 21290

Orbit data source: Space-Track

DELTA 1 DEB, 21290 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/21290?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21290, 1975-052AB

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

Medium (>0.1 m² and <1 m²)

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Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21290U 75052AB  26171.23068315 -.00000030  00000-0  12944-5 0  9997
2 21290  99.5547  72.3627 0511225 162.8283 350.1991 12.43348189593219

Epoch: 2026-06-20T05:32Z

TLE epoch observation values (Epoch: 2026-06-20T05:32:11.024Z)

Latitude

27.6561°

Longitude

-94.09728°

Altitude

1,099.699 km

Speed

7.486 km/s

True Right ascension

17h 09m 35s

True Declination

27° 31' 17"

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

16:06:13

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,892.103 km

Perigee altitude

1,087.638 km

Semi-major axis

7,868.007 km

Eccentricity

0.05112

Inclination

99.5547°

RAAN

72.3627°

Arg. of periapsis

162.8283°

True anomaly

349.13513°

Mean anomaly

350.1991°

Eccentric anomaly

349.67407°

Mean motion

3.1099 °/min

Orbital period

115.76 mins

BSTAR

0.0000012944

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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	2026-06-22 05:40:05.312Z	29.671° NE	2026-06-22 05:46:05.312Z	110.378° ESE	35.2°	2026-06-22 05:51:05.312Z	168.202° S
9 mins	2026-06-22 07:35:05.312Z	347.168° N	2026-06-22 07:39:05.312Z	304.074° NW	25.307°	2026-06-22 07:44:05.312Z	246.779° WSW
6 mins	2026-06-22 14:55:05.312Z	70.114° E	2026-06-22 14:58:05.312Z	49.213° ENE	13.69°	2026-06-22 15:01:05.312Z	27.823° NE
16 mins	2026-06-22 16:42:05.312Z	145.119° SSE	2026-06-22 16:50:05.312Z	75.614° E	41.655°	2026-06-22 16:58:05.312Z	353.27° N
15 mins	2026-06-22 18:37:05.312Z	209.561° SW	2026-06-22 18:44:05.312Z	260.772° W	27.935°	2026-06-22 18:52:05.312Z	324.891° NNW
7 mins	2026-06-23 04:53:05.312Z	57.786° ENE	2026-06-23 04:56:05.312Z	89.264° E	18.24°	2026-06-23 05:00:05.312Z	130.44° SE

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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, 21290 on other resources

View DELTA 1 DEB, 21290 on Heavens-Above

View DELTA 1 DEB, 21290 on Keep Track

View DELTA 1 DEB, 21290 on Celestrak

View DELTA 1 DEB, 21290 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, 21290

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2026-06-20T05:32:11.024Z)

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, 21290 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago