Newcomb, Simon, 1835-1909, Holden, Edward Singleton, 1846-1914, joint author · New York, H. Holt and Company · leaf 292
to see one of the PLANETARY ASPECTS. 273 outer planets will be when it is in opposition—that is, whenits geocentric longitude or its right ascension differs 180°or 12 from that of the sun. At such a time the planetwill rise at sunset and culminate at midnight. During thethree months following… … planet will be two to three hours high about sunset, andwill culminate about nine or ten oclock. Of course theinner planets never come into opposition, and hence arebest seen about the times of their greatest elongations. The above figure gives a rough plan of part of thesolar system as it would…
Astronomy
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