IUS R/B(1), 25868

Orbit data source: Space-Track

IUS R/B(1), 25868 is space debris originally from a launch on Fri, 23 Jul 1999 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 URL

https://www.satcat.com/sats-embedded/25868?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

25868, 1999-040C

Orbit

Active

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

PW CSD

Mission

Spacecraft

Bus & Motor

ORBUS 21, ORBUS 21

Mass

1,164 kg wet, 1,164 kg dry

Launch date (UTC)

1999-07-23 (27 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

8.491 m², Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 3 days ago

TLE from 3 days ago

0 IUS R/B(1)
1 25868U 99040C   26170.94816791  .00014834  00000-0  54545-3 0  9998
2 25868  28.5185  38.6848 4333979 252.6873  56.5502  6.87681543613841

Epoch: 2026-06-19T22:45Z

TLE epoch observation values (Epoch: 2026-06-19T22:45:21.707Z)

Latitude

-0.00003°

Longitude

149.17448°

Altitude

4,516.292 km

Speed

6.25 km/s

True Right ascension

02h 34m 44s

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

23:19:40

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

10,370.135 km

Perigee altitude

242.22 km

Semi-major axis

11,684.315 km

Eccentricity

0.4334

Inclination

28.5185°

RAAN

38.6848°

Arg. of periapsis

252.6873°

True anomaly

107.36304°

Mean anomaly

56.5502°

Eccentric anomaly

81.08187°

Mean motion

1.71846 °/min

Orbital period

209.49 mins

BSTAR

0.00054545

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Other satellites on launch #40 in the year 1999 (1999-07-23 UTC)

STS 93, 25866 (Decayed)

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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.
29 mins	2026-06-22 13:38:21.735Z	126.013° SE	2026-06-22 13:50:21.735Z	107.55° ESE	12.1°	2026-06-22 14:07:21.735Z	90.956° ESE
116 mins	2026-06-22 17:03:21.735Z	213.588° SW	2026-06-22 17:42:21.735Z	143.955° SSE	39.802°	2026-06-22 18:59:21.735Z	85.427° E
123 mins	2026-06-22 20:53:21.735Z	258.398° W	2026-06-22 22:10:21.735Z	192.887° SSW	43.233°	2026-06-22 22:56:21.735Z	117.013° SE
78 mins	2026-06-23 01:17:21.735Z	281.427° WNW	2026-06-23 02:15:21.735Z	234.077° WSW	29.787°	2026-06-23 02:35:21.735Z	176.001° S

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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), 25868 on other resources

View IUS R/B(1), 25868 on Heavens-Above

View IUS R/B(1), 25868 on Keep Track

View IUS R/B(1), 25868 on Celestrak

View IUS R/B(1), 25868 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), 25868

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-19T22:45:21.707Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #40 in the year 1999 (1999-07-23 UTC)

IUS R/B(1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out IUS R/B(1), 25868 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago