< Page:Gods Glory in the Heavens.djvu
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SYNOPTICAL TABLES.
Comets calculated before 1849, retrograde, | 100 |
Great comet of 1861, distance from the Earth on June 30, . | 17,000,000 |
Great comet of 1861, surmised by Hind that the Earth passed through its tail, | 30th June |
Great comet of 1861, length of tail as seen at Rome | 118° |
Great comet of 1861, length of tail as seen at Paris | 45° |
Great comet of 1861, polarisation of tail strong, but no trace in nucleus till | 3d July |
Great comet of 1861, tail seen to flicker and disappear for an instant. | 4th July |
Encke's comet, before perihelion, diameter diminished in two months to | 1-90th |
Encke's comet after perihelion, diameter increased in six days from 1 to . | 40 |
Rotation of comet of 1825 (doubtful), | 19h. 37m. |
Mass of Lexell's comet less than (Earth's = 1) | 1-5000th |
Chances unfavourable to collision between earth and a comet (comet's diam. = l-4th of earth's), | 281,000,000 |
Number of binary systems with assigned periods, about | 15 |
Period of Castor, with semi-axis of 8", in years, | 252 |
Period of χ Ursro Majoris, with semi-axis of 3″.8 | 59 |
Period of γ Virginis, with semi-axis of 3″.6, | 182 |
Causes of colour in stars, intrinsic and complementary, | 2 |
Number of stars covered by the Moon in parts of the Milky Way, | 2000 |
Number of stars in some clusters, | 50, |
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