P3E1R1I1H4E1L1I1A1
14 points
PERIHELIA is validvalid
PERIHELION, [n]
PERIHELION, the point of the orbit of a planet or a comet at which it is nearest to the sun, as opposed to aphelion [n]
PERIHELION, [n]
PERIHELION, the point of the orbit of a planet or a comet at which it is nearest to the sun, as opposed to aphelion [n]