Key statistics
Satellite CXO at a glance.
Uptime
9484
Days in orbit
Revolutions
≈ 0.4
Per day
Orbit
OTHER
Other
Inclination
49.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for CXO.
Object identification
Identified? True
Debris? False
Object name: CXO
International designator: 1999-040B
Object number (NORAD): 25867
Object ID (CCSDS): 25867
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 3809.62 minutes
Inclination: 49.942 deg
SMA: 80800.611 km
Apoapsis: 142179.202 km
Periapsis: 6665.75 km
RAAN: 128.7398 deg
Eccentricy: 0.838567
Argument of periapsis: 309.7762 deg
Mean anomaly: 0.719 deg
Mean motion: 0.37799042 rev/day
Mean motion (dot): 0.00000634 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: July 7, 2025, 5:18 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 9, 2025, 2:18 p.m. UTC
TLE line 0: 0 CXO
TLE line 1: 1 25867U 99040B 25190.59594014 .00000634 00000-0 00000-0 0 9997
TLE line 2: 2 25867 49.9420 128.7398 8385670 309.7762 0.7190 0.37799042 16035
Live tracking on map
Real-time ground track for satellite CXO.
In-orbit conjunctions
There are no conjunctions computed for CXO, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
STS-93 marked the 95th launch of the Space Shuttle, the 26th launch of Columbia, and the 21st night launch of a Space Shuttle. Eileen Collins became the first female shuttle Commander on this flight. Its primary payload was the Chandra X-ray Observatory.
CXO was lifted into orbit during the mission ‘Space Shuttle Columbia OV-102 | STS-93’, on board a Space Shuttle space rocket.
The launch took place on July 23, 1999, 4:31 a.m. from Launch Complex 39B.
For more information about the launch, click the button.
Space Shuttle Columbia OV-102 | STS-93
Agency: N/A
Status: Launch Successful
Launch date: July 23, 1999, 4:31 a.m. UTC
Rocket: Space Shuttle
Launch pad: Launch Complex 39B
Location: Kennedy Space Center, FL, USA
...
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NASA’s Chandra Sees Surprisingly Strong Black Hole Jet at Cosmic “Noon”
A black hole has blasted out a surprisingly powerful jet in the distant universe, according to a new study from NASA’s Chandra X-ray Observatory and discussed in our latest press release. This jet exists early enough in the cosmos that it is being illumin...
Galaxy Clusters on Course to Crash Again, NASA’s Chandra Finds
New observations from NASA’s Chandra X-ray Observatory and other telescopes have captured a rare cosmic event: two galaxy clusters have collided and are now poised to head back for another swipe at each other. Galaxy clusters are some of the largest struc...
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