How to use in-sentence of “perihelion”:
– Orbital perihelion was on December 27, 105,464,560km away.
– Its perihelion is only 0.140 AU – less than half Mercury’s perihelion distance.
– It has a mean opposition opposition magnitude of +8.5, about equal to the Titan and can reach +7.9 at a near perihelion opposition.
– The hemisphere that is in summer at perihelion receives much of the corresponding increase in solar radiation, but that same hemisphere in winter at aphelion has a colder winter.
– Its orbital period changed from 40 years to about 6 years, and its perihelion is now about 1.59 AU.
– Its perihelion is at a quite similar longitude to those of Vesta and Ceres, though its ascending and descending nodes are opposite the corresponding ones for those objects.
– Although its perihelion is extremely close to the mean distance of Ceres and Pallas, a collision between Hygiea and its bigger companions is impossible because at that distance they are always on opposite sides of the ecliptic.
