periastron

per·i·as·tron

P5205200 (pĕr′ē-ăs′trən, -trŏn)n. pl. per·i·as·tra (-trə) The point at which an object is closest to the center of mass of the star it is orbiting.

[peri- + Greek astron, star (probably on the model of perihelion); see ster- in Indo-European roots.]

periastron

(ˌpɛrɪˈæstrɒn) n (Astronomy) astronomy the point in the orbit of a body around a star when it is nearest to the star, esp applied to double-star systems

periastron

The point in the orbit of an object around a star at which the object is at its closest to the star.

Translations

periastro

periastron

enUK

periastron

(pĕr'ēăs`trən): see apsisapsis
(pl. apsides), point in the orbit of a body where the body is neither approaching nor receding from another body about which it revolves. Any elliptical orbit has two apsides.
..... Click the link for more information. .

periastron

(pe-ree-ass -tron) The closest approach of the two components of a binary star. At greatest separation the components are at apastron.

Periastron

the point in the orbit of a star nearest the primary star around which it is revolving. If the influence of other celestial bodies is negligible, motion conforms to Kepler’s laws of planetary motion. Perturbations, caused by the attraction of a third star or by the aspherical nature of the star’s shape, result in variations in the position of the periastron in space.

periastron

[¦per·ē¦as·trən] (astronomy) The coordinates and time when the two stars of a binary star system are nearest to each other in their orbits.

单词	periastron
释义	periastron enUK per·i·as·tron P5205200 (pĕr′ē-ăs′trən, -trŏn)n. pl. per·i·as·tra (-trə) The point at which an object is closest to the center of mass of the star it is orbiting. [peri- + Greek astron, star (probably on the model of perihelion); see ster- in Indo-European roots.] periastron (ˌpɛrɪˈæstrɒn) n (Astronomy) astronomy the point in the orbit of a body around a star when it is nearest to the star, esp applied to double-star systems periastron The point in the orbit of an object around a star at which the object is at its closest to the star. Translations periastro periastron enUK periastron (pĕr'ēăs`trən): see apsisapsis (pl. apsides), point in the orbit of a body where the body is neither approaching nor receding from another body about which it revolves. Any elliptical orbit has two apsides. ..... Click the link for more information. . periastron (pe-ree-ass -tron) The closest approach of the two components of a binary star. At greatest separation the components are at apastron. Periastron the point in the orbit of a star nearest the primary star around which it is revolving. If the influence of other celestial bodies is negligible, motion conforms to Kepler’s laws of planetary motion. Perturbations, caused by the attraction of a third star or by the aspherical nature of the star’s shape, result in variations in the position of the periastron in space. periastron [¦per·ē¦as·trən] (astronomy) The coordinates and time when the two stars of a binary star system are nearest to each other in their orbits. MedicalSeeAPSISThesaurusSeeapsis
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