IUS R/B(1), 20843

Orbit data source: Space-Track

IUS R/B(1), 20843 is space debris in HEO originally from a launch on Sat, 06 Oct 1990 UTC launched from the Air Force Eastern Test Range (AFETR). 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 src="https://www.satcat.com/sats-embedded/20843?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/20843?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

20843, 1990-090C

Orbit

HEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

UTC CSD

Mission

Spacecraft

Bus & Motor

ORBUS 21, Unknown motor

Mass

1,056 kg wet, 1,056 kg dry

Launch date (UTC)

1990-10-06 (36 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, Unknown HBR

Radar Cross Section

7.708 m², Large (>1 m²)

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

TLE from 2 days ago

0 IUS R/B(1)
1 20843U 90090C   26126.10571709  .00002494  00000-0  10637-2 0  9990
2 20843  28.2373  79.2014 6684431 134.0125 305.5340  3.03876482364212

Epoch: 2026-05-06T02:32Z

TLE epoch observation values (Epoch: 2026-05-06T02:32:13.956Z)

Latitude

0.00003°

Longitude

177.13204°

Altitude

14,416.147 km

Speed

4.306 km/s

True Right ascension

05h 16m 38s

True Declination

0° 00' 00"

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

23:28:03

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

27,220.755 km

Perigee altitude

298.713 km

Semi-major axis

20,137.871 km

Eccentricity

0.66844

Inclination

28.2373°

RAAN

79.2014°

Arg. of periapsis

134.0125°

True anomaly

226.06011°

Mean anomaly

305.534°

Eccentric anomaly

267.27824°

Mean motion

0.75949 °/min

Orbital period

474 mins

BSTAR

0.0010637

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Other satellites on launch #90 in the year 1990 (1990-10-06 UTC)

IUS R/B(2), 20844

STS 41, 20841 (Decayed)

PAM-S R/B, 20845

ULYSSES, 20842

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IUS R/B(1) 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.
120 mins	2026-05-07 16:17:35.309Z	132.717° SE	2026-05-07 17:37:35.309Z	125.718° SE	14.276°	2026-05-07 18:17:35.309Z	111.201° ESE
25 mins	2026-05-08 02:34:35.309Z	255.591° W	2026-05-08 02:55:35.309Z	200.388° SSW	31.884°	2026-05-08 02:59:35.309Z	136.07° SSE

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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 IUS R/B(1), 20843 on other resources

View IUS R/B(1), 20843 on Heavens-Above

View IUS R/B(1), 20843 on Keep Track

View IUS R/B(1), 20843 on Celestrak

View IUS R/B(1), 20843 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

IUS R/B(1), 20843

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: 2026-05-06T02:32:13.956Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #90 in the year 1990 (1990-10-06 UTC)

IUS R/B(1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out IUS R/B(1), 20843 on other resources

Documentation

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