Key statistics
Satellite CXO at a glance.
Uptime
9545
Days in orbit
Revolutions
≈ 0.4
Per day
Orbit
OTHER
Other
Inclination
51.2
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: 3808.541 minutes
Inclination: 51.2313 deg
SMA: 80785.346 km
Apoapsis: 141417.468 km
Periapsis: 7396.955 km
RAAN: 126.0722 deg
Eccentricy: 0.82948529
Argument of periapsis: 310.306 deg
Mean anomaly: 0.6801 deg
Mean motion: 0.37809756 rev/day
Mean motion (dot): 0.00001005 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Sept. 8, 2025, 9:49 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 11, 2025, 1:29 a.m. UTC
TLE line 0: 0 CXO
TLE line 1: 1 25867U 99040B 25254.06208417 .00001005 00000-0 00000-0 0 9992
TLE line 2: 2 25867 51.2313 126.0722 8294853 310.3060 0.6801 0.37809756 16262
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
...
Latest news about this satellite
NASA’s Chandra Reveals Star’s Inner Conflict Before Explosion
The inside of a star turned on itself before it spectacularly exploded, according to a new study from NASA’s Chandra X-ray Observatory. Today, this shattered star, known as the Cassiopeia A supernova remnant, is one of the best-known, well-studied objects...
Reaching Out
This image released on Aug. 20, 2025, combines new radio data from the Australia Telescope Compact Array with X-ray data from NASA’s Chandra X-ray Observatory. Chandra first released an image of this pulsar and its surrounding hand-shaped nebula in 2009. ...
X-ray and Radio go ‘Hand in Hand’ in New Image
In 2009, NASA’s Chandra X-ray Observatory released a captivating image: a pulsar and its surrounding nebula that is shaped like a hand. Since then, astronomers have used Chandra and other telescopes to continue to observe this object. Now, new radio data ...
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