DELTA 1 DEB, 21598

Orbit data source: Space-Track

DELTA 1 DEB, 21598 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/21598?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21598, 1975-052HS

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)

Expand to show TLE details & history
Last TLE update: 10 hours ago

TLE from 10 hours ago

0 DELTA 1 DEB
1 21598U 75052HS  26009.58701538  .00000180  00000-0  67526-3 0  9996
2 21598  99.5574  19.5183 0351208 103.7656  22.6157 12.84274824623646

Epoch: 2026-01-09T14:05Z

TLE epoch observation values (Epoch: 2026-01-09T14:05:18.128Z)

Latitude

51.0973°

Longitude

-108.95199°

Altitude

1,084.126 km

Speed

7.432 km/s

True Right ascension

14h 05m 59s

True Declination

50° 56' 11"

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

00:12:49

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,592.133 km

Perigee altitude

1,051.284 km

Semi-major axis

7,699.845 km

Eccentricity

0.03512

Inclination

99.5574°

RAAN

19.5183°

Arg. of periapsis

103.7656°

True anomaly

24.22837°

Mean anomaly

22.6157°

Eccentric anomaly

23.41537°

Mean motion

3.21233 °/min

Orbital period

112.07 mins

BSTAR

0.00067526

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

DELTA 1 DEB, 21349 (Decayed)

DELTA 1 DEB, 21522 (Decayed)

DELTA 1 DEB, 21502 (Decayed)

DELTA 1 DEB, 21318 (Decayed)

DELTA 1 DEB, 42655

DELTA 1 DEB, 21391 (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.
13 mins	2026-01-10 00:45:11.470Z	176.556° S	2026-01-10 00:52:11.470Z	247.682° W	41.882°	2026-01-10 00:58:11.470Z	336.944° NNW
10 mins	2026-01-10 12:31:11.470Z	42.663° NE	2026-01-10 12:35:11.470Z	92.744° ESE	29.12°	2026-01-10 12:41:11.470Z	158.88° S
11 mins	2026-01-10 14:21:11.470Z	354.069° N	2026-01-10 14:26:11.470Z	288.978° WNW	31.95°	2026-01-10 14:32:11.470Z	227.899° WSW
10 mins	2026-01-10 23:15:11.470Z	117.458° SE	2026-01-10 23:20:11.470Z	64.798° ENE	27.319°	2026-01-10 23:25:11.470Z	9.47° NNE

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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, 21598 on other resources

View DELTA 1 DEB, 21598 on Heavens-Above

View DELTA 1 DEB, 21598 on Keep Track

View DELTA 1 DEB, 21598 on Celestrak

View DELTA 1 DEB, 21598 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, 21598

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 10 hours ago

TLE from 10 hours ago

TLE epoch observation values (Epoch: 2026-01-09T14:05:18.128Z)

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, 21598 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 10 hours ago