Active mission (science.nasa.gov, page updated 2026-04-14), on a reduced budget: $63M for FY26, $11M below full-mission costs (Chandra Users' Committee, 2026-05-06). Its orbit has changed since launch, when it was 10,000 × 140,161 km, inclined 28.5° (chandra.harvard.edu); about 12,800 × 136,000 km above the Earth, inclined 58°, from CelesTrak's elements read 2026-10-31.
Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.
Facts
JPL Horizons trajectory round Earth: worst miss 372 km on the dates it was checked against (median 45 km); between those dates as much as about 1,100 km. Dates after the data was fetched are Horizons' predictions, which it revises as a mission flies.
Where this comes from
NASA/CXC/SAO
Spacecraft trajectories: JPL Horizons, NASA/JPL-Caltech; each mission's agency credited on its card.
3D model: Chandra X-ray Observatory model: NASA/Brian E. Kumanchik, NASA 3D Resources