heliocentric orbit; circumsolar orbit
Technical astronomy term for an orbit around the Sun. Used in scientific contexts.
The probe was placed into a heliocentric orbit.
Refers to an orbit around the Earth, while 太陽周回軌道 is around the Sun.
Compound of 太陽 (sun) + 周回 (circling) + 軌道 (orbit). A straightforward technical term.