Page:Gods Glory in the Heavens.djvu/391

This page has been proofread, but needs to be validated.
SYNOPTICAL TABLES.
355
Halley's comet, length on 5th Nov. 1835 (perihelion 15th Nov.), 2° 30′
Halley's comet,— — — jet and tail commenced Oct. 2
Halley's comet,— — — oscillation of jet obvious in the course of 1h.
Halley's comet,— — — invisible after the perihelion, in months, 2
Halley's comet,— — — diameter of disc when seen, not including coma, 2′
Halley's comet,— — — increase of volume of illuminated space during six days, from Jan. 25, 40 times
Return of Charles V. comet of 1556, predicted by Hind in period 1856-61
Period of Encke's comet, shortening at the rate, per revolution, of Od..11
Lexell's comet of 1770, period in years, 5.5
Lexell's comet of 1770,— — — thrown out of the system by attraction of Jupiter in 1779
Lexell's comet of 1770,— — — distance from Sun at perihelion (Sun's radius = 1), 1-7th
Lexell's comet of 1770,— — — angular diameter of Sun at perihelion, 121° 32"
Lexell's comet of 1770,— — — disc of Sun at perihelion (disc from Earth = 1), 47,000
Lexell's comet of 1770,— — — heat at perihelion (heat of 32 inch burning lens = 1), 25
Lexell's comet of 1770,— — — velocity at perihelion, miles, in one second, 366
Lexell's comet of 1770,— — — tail stretching to the Earth's orbit, whirled round in two hours, 180°
Lexell's comet of 1770,— — — radius of head on 29th March, in miles, 47,000
Lexell's comet of 1770,— — — length of tail, 150,000,000
Lexell's comet of 1770,— — — breadth of tail, 3,000,000
Periodic comets, all direct when inclination under 17°
Comets calculated before 1849, direct, 94
This article is issued from Wikisource. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.