Key statistics
Satellite IUS R/B(2) at a glance.
Uptime
12457
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
14.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for IUS R/B(2).
Object identification
Identified? True
Debris? False
Object name: IUS R/B(2)
International designator: 1991-054D
Object number (NORAD): 21641
Object ID (CCSDS): 21641
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 1434.804 minutes
Inclination: 14.0641 deg
SMA: 42139.427 km
Apoapsis: 35908.735 km
Periapsis: 35613.85 km
RAAN: 335.2507 deg
Eccentricy: 0.00349893
Argument of periapsis: 338.8943 deg
Mean anomaly: 67.2928 deg
Mean motion: 1.00362118 rev/day
Mean motion (dot): 0.000001 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Sept. 8, 2025, 6:18 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 8, 2025, 12:06 p.m. UTC
TLE line 0: 0 IUS R/B(2)
TLE line 1: 1 21641U 91054D 25251.50447177 .00000100 00000-0 00000-0 0 9994
TLE line 2: 2 21641 14.0641 335.2507 0034989 338.8943 67.2928 1.00362118 44541
Live tracking on map
Real-time ground track for satellite IUS R/B(2).
Associated space launch
STS-43 was the ninth flight of the Space Shuttle Atlantis. The nine day mission had a primary goal of launching the fifth Tracking and Data Relay Satellite, TDRS-E.
IUS R/B(2) was lifted into orbit during the mission ‘Space Shuttle Atlantis / OV-104 | STS-43’, on board a Space Shuttle space rocket.
The launch took place on Aug. 2, 1991, 3:02 p.m. from Launch Complex 39A.
For more information about the launch, click the button.
Space Shuttle Atlantis / OV-104 | STS-43
Agency: N/A
Status: Launch Successful
Launch date: Aug. 2, 1991, 3:02 p.m. UTC
Rocket: Space Shuttle
Launch pad: Launch Complex 39A
Location: Kennedy Space Center, FL, USA
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
