DELTA 1 DEB, 21498

Orbit data source: Space-Track

DELTA 1 DEB, 21498 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/21498?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21498, 1975-052FT

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

Small (<0.1 m²)

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Last TLE update: 20 hours ago

TLE from 20 hours ago

0 DELTA 1 DEB
1 21498U 75052FT  26031.77855069  .00000076  00000-0  34490-3 0  9998
2 21498  99.7084 323.6265 0264542   9.0568  46.3995 12.95200571638488

Epoch: 2026-01-31T18:41Z

TLE epoch observation values (Epoch: 2026-01-31T18:41:06.779Z)

Latitude

56.52261°

Longitude

-102.56403°

Altitude

1,153.424 km

Speed

7.346 km/s

True Right ascension

20h 34m 50s

True Declination

56° 22' 21"

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

16:51:24

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,480.871 km

Perigee altitude

1,075.78 km

Semi-major axis

7,656.462 km

Eccentricity

0.02645

Inclination

99.7084°

RAAN

323.6265°

Arg. of periapsis

9.0568°

True anomaly

48.64536°

Mean anomaly

46.3995°

Eccentric anomaly

47.51731°

Mean motion

3.23967 °/min

Orbital period

111.12 mins

BSTAR

0.0003449

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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.
12 mins	2026-02-01 18:36:32.238Z	141.475° SSE	2026-02-01 18:42:32.238Z	72.994° E	38.041°	2026-02-01 18:48:32.238Z	356.801° N
9 mins	2026-02-01 20:28:32.238Z	220.646° SW	2026-02-01 20:32:32.238Z	265.821° W	23.26°	2026-02-01 20:37:32.238Z	317.651° NNW
6 mins	2026-02-02 06:18:32.238Z	70.255° E	2026-02-02 06:20:32.238Z	85.854° E	13.746°	2026-02-02 06:24:32.238Z	115.573° SE
15 mins	2026-02-02 08:04:32.238Z	18.724° NNE	2026-02-02 08:11:32.238Z	128.066° SE	44.218°	2026-02-02 08:19:32.238Z	190.716° SSW
10 mins	2026-02-02 09:55:32.238Z	341.614° N	2026-02-02 09:59:32.238Z	305.669° NW	22.338°	2026-02-02 10:05:32.238Z	255.308° 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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21498 on other resources

View DELTA 1 DEB, 21498 on Heavens-Above

View DELTA 1 DEB, 21498 on Keep Track

View DELTA 1 DEB, 21498 on Celestrak

View DELTA 1 DEB, 21498 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, 21498

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-01-31T18:41:06.779Z)

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, 21498 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 20 hours ago