Philosophical Transactions of the Royal Society of London
Philosophical Transactions of the Royal Society of London
Jstor (Organization)
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Trans, for 1805, page ^31. Digitized by Google sc6 Dr. Herscrel an the QfiantUy given, the angle of the du'ection of its motion with the visual ray will still remain unknown. As hitherto we have consulted only those proper motfons whidi have a marked tendency to a parsdlacdc centre, we ought now, when the question is to determine the velocity of the solar motion, to have in view the real motion of every star whose apparent motion we know ; for as it would not be proper to assign a motion to the... sun, either much greater or much less than any real motion which may be found to exist in some star or other, it follows that a general review of proper motions ought to be made before we can impartially fix on the solar velocity ; but as trials with a number of stars would be attended with considerable inconvenience, I shall use only our former six in laying down the method that will be followed with all the rest. Proportional Distance of the Stars. We are now come to a point no less difficult than essential to be determined.
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