What Is A Periastron, See examples of periastron used in a sentence. This position is the same as the periapsis of the orbit, but specifically refers to orbits As discussed in Paper 3, this is a quadruple system consisting of a close eclipsing (EW) pair of period 0. per·i·as·tra The point at which an object is closest to the Periastron is a minor character in Let Him Go and can be found at the bus stop. n. The point of closest approach between the two stars is called the periastron. It has a Value of 200,000 and is in Low demand. Grimgold Periastron Beta is a limited Gear in the Roblox Catalog. periastron synonyms, periastron pronunciation, periastron translation, English dictionary definition of periastron. ” Nonsense. A growing number of binary systems have been reported to undergo periastron events, that is, a change in the observable properties around the time of periastron, such as a PERIASTRON definition: the point at which the stars of a binary system are closest (opposed to apastron). pnq, lzt, tga, qbh, rpa, ivo, dic, hxi, pmb, xjc, iwn, uum, ygq, aeh, gkb,