pericenter


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pericenter

(pe -ră-sen-ter) The point in an orbit, e.g. of a planet or of a component of a binary star, that is nearest to the center of mass of the system. The farthest point is the apocenter.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pericenter

 

the point in the orbit of a celestial body closest to the central body around which the first body revolves. The term “pericenter” is used in problems in celestial mechanics where the central body is not specified, as well as in the case of orbits circumscribed by the sun and other stars around the center of the Galaxy. In other cases, the terms “periastron,” “perigee,” and “perihelion” are used.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

pericenter

[′per·ə‚sen·tər]
(physics)
That point on any orbit nearest to the center of attraction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The final flybys and EOI maneuver occur in close proximity of Europa pericenter, in order to benefit from a lower v[infinity].
Peron, "Accurate measurement in the field of the earth of the general-relativistic precession of the LAGEOS II pericenter and new constraints on non-newtonian gravity," Physical Review Letters, vol.
For the case of the third-body perturbation, Kozai [32] studied the secular behavior of the satellite, which can be divided into two cases: when the argument of the pericenter circulates and when it librates.
Where [epsilon] = [square root of 3(B - A)/C], the moments of inertia are A < B < C , n is the orbital frequency, [theta] measures the orientation of the axis of minimum moment from the line to pericenter, p is the angular momentum conjugate to [theta], with the coefficients [H.sub.2] (e) = 1 - [5e.sup.2]/2, [H.sub.3] (e) = 7e/2, and [H.sub.1], (e) = - e/2, to second order in e.