A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 412
the time whenthe comet was passing, thetwo bodies would really bevery near to each other.The fact, as we shall see,is a very significant one,pointing to a connection be-tween these bodies and theplanet. It is true for cdlthe comets whose periodsare less than eight jears —for those not inserted in… … Fig. 196. — Orbits of Short-period Comets. 704. Recognition of Elliptic Comets. — Modern observations areso much more accurate than those made two centuries ago that it isnow sometimes possible to determine the eccentricity and period ofan elliptic comet by means of the observations made at a…
Astronomy
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