Olmsted, Denison, 1791-1859. [from old catalog] · New York, R. B. Collins · leaf 188
he sun being at S in the heavens, the planet will beseen at A and B, when at its greatest elongations, andwill appear no further from the sun than the arc SAor SB respectively. 217. What is Mercurys greatest elongation from the sun?What is Vemiss ? What is said respecting the difficulty ofseeing… … 218. A planet is said to be in conjunction with thesun, when it is seen in the same part of the heavenswith the sun, or when it has the same longitude. Mer-cury and Yenus have each two conjunctions, the infe-rior and the superior. The inferior conjunction is itsposition when in conjunction on the…
Astronomy
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