Brocklesby, John, 1811-1889. [from old catalog] · New York, Sheldon and company · leaf 121
y, an irregularity. What is the amount of the annual change in the position of the perihelion?In what direction does it movel Is this motion constant? What is meant by the termanomalistic year 1 What is its length ? How may this motion of the perihelion be con-ceived to take place ? In how long a… … ANOMALISTIC YEAR. instrument or mural circle,1 and the astronomical clock. *The daily apparent velocity of the sun at apogee, isnearly 57 12 (57 11.48,) and at perigee 1° Or, whichis the same as saying that the earths actual daily motionat her aphelion is 57 12, and at her perihelion 1° 01. 188.…
Astronomy
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