Page 589 - 89 history of astronomy_opt
P. 589
a point in the constellation Hercules, R.A.
ˆ
ˆ
257A; N. Decl. 25A. This grand discov-
ery has been amply confirmed, and, though
opinions differ as to the exact direction, it
happens that the point first indicated by
Herschel, from totally insufficient data, agrees
well with modern estimates.
Comparing the proper motions and par-
allaxes to get the actual velocity of each star
589
