pericenter
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pericenter — pericentral, pericentric, adj. /per euh sen teuhr/, n. Astron. the point at which a heavenly body orbiting around a primary other than the earth or sun is closest to the primary. Cf. apocenter. [1900 05; PERI + CENTER] * * * … Universalium
pericenter — peri·center … English syllables
pericenter — ˈperə+ˌ , ˌ ̷ ̷ ̷ ̷ˈ ̷ ̷ ̷ ̷ noun Etymology: peri + center : the point in the orbit of a revolving body nearest the center of gravity about which the body moves compare perigee, perihelion * * * pericentral, pericentric, adj. /per euh sen teuhr/ … Useful english dictionary
Kozai mechanism — In celestial mechanics, the Kozai mechanism is a secular perturbative effect on certain orbits. It causes changes in the eccentricity and the inclination of the orbit of the perturbed body to be periodic and synchronized, and also causes… … Wikipedia
S2 (star) — Starbox begin name= S 2 Starbox observe epoch=J2000.0 (ICRS) ra=RA|17|45|40.044SIMBAD link|%5BEG97%5D+S2|PGM2006 E1 Star in double system, database entry, SIMBAD. Accessed on line July 15, 2008.] dec=DEC|−29|00|28 constell=Sagittarius Starbox… … Wikipedia
243 Ida — Galileo image of 243 Ida. The tiny dot to the right is its moon, Dactyl. Discovery[1] and designation … Wikipedia
Apsis — For the architectural term, see Apse. Aphelion and Perihelion redirect here. For Edenbridge s Album, see Aphelion (album). Apogee and Perigee redirect here. For the literary journal, see Perigee: Publication for the Arts. For other uses, see… … Wikipedia
Orbital elements — are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are generally considered in classical two body systems, where a Kepler orbit is used (derived from Newton s laws of motion and Newton s law… … Wikipedia
Pi (letter) — Pi (uppercase Pi;, lower case pi;) is the sixteenth letter of the Greek alphabet. In the system of Greek numerals it has a value of 80.In Modern Greek, the name of the letter is pronEng|pi; in modern English, it is pronounced IPA|/paɪ/, in… … Wikipedia
Moons of Saturn — Artist s concepts of the Saturnian ring–moon system Saturn, its rings and major icy moons from Mimas to Rhea … Wikipedia
