A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 289
the moon leaves the node, it is again diminished, thepath XP2 being bent at P2 back to P2b.,, parallel to P^: so thatwhile by both operations the node is made to recede from Nx to N3,the inclination suffers very little change, if the orthogonal componentremains the same on both sides of the node.… … Fig. 150. — Regression of the Nodes of the Moons Orbit. quadrature, — the rate at which the nodes regress is extremely variable.In the long run it makes its backward revolution once in about nine-teen years (Arts. 249 and 891). [18.5997 years. — JSfeison.^ See Herschels Outlines of Astronomy,…
Astronomy
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