IUS R/B(2), 21641
Orbit data source: Space-Track
IUS R/B(2), 21641 is space debris in GEO originally from a launch on Fri, 02 Aug 1991 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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21641 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
UTC CSD
Mission
Spacecraft
Bus & Motor
ORBUS 6, Unknown motor
Mass
~1,100 kg wet, ~1,100 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 1.4 m
Radar Cross Section
8.086 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 IUS R/B(2)
1 21641U 91054D 26149.35266544 -.00000297 00000-0 00000+0 0 9998
2 21641 13.7700 333.1122 0036316 347.4601 3.9094 1.00347998 47178Epoch: 2026-05-29T08:27Z
TLE epoch observation values (Epoch: 2026-05-29T08:27:50.294Z)
Latitude
-2.03085°
Longitude
-49.08991°
Altitude
35,613.212 km
Speed
3.087 km/s
True Right ascension
21h 39m 00s
True Declination
-2° 01' 44"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
02:07:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,919.277 km
Perigee altitude
35,613.174 km
Semi-major axis
42,144.362 km
Eccentricity
0.00363
Inclination
13.77°
RAAN
333.1122°
Arg. of periapsis
347.4601°
True anomaly
3.9379°
Mean anomaly
3.9094°
Eccentric anomaly
3.92364°
Mean motion
0.25086 °/min
Orbital period
1,435.06 mins
BSTAR
0
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Other satellites on launch #54 in the year 1991 (1991-08-02 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.IUS R/B(2) 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. |
|---|---|---|---|---|---|---|---|
| 455 mins | 2026-05-29 16:39:22.406Z | 102.225° ESE | 2026-05-29 16:39:22.406Z | 102.225° ESE | 23.222° | 2026-05-30 00:14:22.406Z | 121.946° SE |
| 615 mins | 2026-05-30 06:24:22.406Z | 119.241° SE | 2026-05-30 14:23:22.406Z | 101.527° ESE | 24.157° | 2026-05-30 16:39:22.406Z | 102.132° ESE |
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21641 neighbors
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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
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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