Spacecraft information: XM-1
| Launched | 7 May 2001 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Sea Launch Platform (mobile) |
| Owner | United States |
| NORAD ID | 26761 |
| COSPAR ID | 2001-018A |
| Alternative names |
ROLL |
| Observing |
Current orbital elements
| Inclination | 8.447° |
| Eccentricity | 0.00101 |
| RA ascending node | 4.234 hr |
| Argument perigee | 257.925° |
| Mean anomaly | 264.220° |
| Orbital period | 1454.452 min |
| Epoch of osculation | 05 Jan 2026, 23:34 |
Derived Quantities
| Min Altitude | 36109.5 km |
| Mean Altitude | 36152.2 km |
| Peak Altitude | 36195.0 km |
Launched alongside
BLOCK DM-SL R/BOrbital History
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