CXO is a payload in HEO orbit, operated by NASA Marshall Space Flight Center, launched 1999.
| Orbit class | HEO |
| Inclination | 56.4882° |
| Eccentricity | 0.7806470 |
| Period | 3809.0 min |
| Apogee | 137,485 km |
| Perigee | 11,344 km |
| Mean motion | 0.37804829 rev/day |
| RAAN | 116.0417° |
| Arg of perigee | 310.0470° |
| Mean anomaly | 0.4589° |
| B* | 0.0000e+0 |
| Rev at epoch | 1,740 |
1 25867U 99040B 26190.53346779 .00000720 00000-0 00000-0 0 99912 25867 56.4882 116.0417 7806470 310.0470 0.4589 0.37804829 17409{
"OBJECT_NAME": "CXO",
"OBJECT_ID": "1999-040B",
"EPOCH": "2026-07-09T12:48:11.617+00:00",
"MEAN_MOTION": 0.37804829,
"ECCENTRICITY": 0.780647,
"INCLINATION": 56.4882,
"RA_OF_ASC_NODE": 116.0417,
"ARG_OF_PERICENTER": 310.047,
"MEAN_ANOMALY": 0.4589,
"EPHEMERIS_TYPE": 0,
"CLASSIFICATION_TYPE": "U",
"NORAD_CAT_ID": 25867,
"REV_AT_EPOCH": 1740,
"BSTAR": 0,
"MEAN_MOTION_DOT": 0.0000072,
"MEAN_MOTION_DDOT": 0
}Reconstructed from CelesTrak OMM mean-elements (element-set number is a placeholder). TLE/OMM data is approximate. Not for operational use or collision avoidance.
| Name | CXO |
| Operator | NASA Marshall Space Flight CenterHIGHvia GCAT — Jonathan McDowell's General Catalog⚠ sources disagree |
| Country | United States |
| Launch date | |
| Launch mass (kg) |
//Orbital data is approximate and not for operational use. Last ingested from CelesTrak on Jul 7, 2026.
| Mission purpose | — |
| Object class |
| Orbital regime |
| Status |