| 释义 |
peri·he·lion
\|perə|hēlyən, -lēən\ noun
(-s)
Etymology: New Latin perihelium, perihelion, from peri- + -helium, -helion (from Greek hēlios sun) — more at solar
: periastron in the solar system : the point in the path of a planet, comet, meteor, artificial planetoid, passing star, or other celestial body that is nearest to the sun — opposed to aphelion; compare apsis, pericenter, perigee; see aphelion illustration |