areocentric


Also found in: Dictionary.
Related to areocentric: Geocentric orbit

areocentric

[‚ar·ē·ō′sen·trik]
(astronomy)
With Mars as a center.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
Mentioned in ?
References in periodicals archive ?
We shall determine a suitable empirical mathematical law for interpolation of the points of the R-Ls graphic, so that for every areocentric longitude Ls we can derive a value for the cap's angular radius.
If dLs is a short arc of areocentric longitude and dR is a small decrease in the radius of the cap during this interval, the ratio V= dR/dLs, or first derivative of the function R(Ls), is the rapidity of the motion of the cap edge toward the pole while Mars proceeds along its orbit.
In this equation [L.sub.s] is the areocentric longitude of the Sun as seen from Mars expressed in degrees.
Mars was in opposition in southern Ophiuchus on 2001 June 13 (diameter 20".4, appearing as a blazing red star at magnitude-2.3), at areocentric longitude (Ls) 177[degrees], just before the start of southern martian spring.
Throughout this report the areocentric longitude (Ls) is used to report the seasonal date.
(The areocentric longitude of the Sun as measured from the Vernal Equinox of Mars, Ls, defines the seasonal date on that planet.) It is concluded that for 30[degrees] < Ls < 54[degrees], the NPC was nearly the same size as it was in 2009-2010.