November 2d, 8h. 56m. A. Nearest Ap. D to d* 2' South of D. Immersion Emersion Immersion Emersion Immersion Star sets eclipsed South of D's South of D's 6 50 3 Centre. Occultation of r H. 11h. 14m. 46s. 11′ 47′′ South of D's Centre. 11 38 D's S. D. at Im. 14' 46.4". December 25th, 5h. 46m. A. Nearest Ap. D to 8 *3' South of D. II. Occultations of, and Appulses to, Stars, of not less than the sixth Magnitude in 1833, visible at Charleston, in Mean Time of the Meridian of Charleston. [Those marked with an asterisk (*) will also be Occultations at Boston, and those with an obelisk (†) in some part of Europe.] D's S. D. at Im. 15′ 15.5"; at Em. 15' 17.4". * Jan. 28th, 9h. 55m. A. Nearest Ap. D to μ Ceti. * 2′ 20′′ South of D's 30th, 4 53 4' N. of D. D's S. D. at Im. 14' 48.1"; at Em. 14' 50.8". July 1st, 7h. 8m. A. Nearest Ap. D. to 2 v Star rises eclipsed Immersion [about] Immersion Star rises 7th Immersion Immersion Immersion * D's S. D. at Em. 15' 0.9" July 8th. Occultation of r H. 2h. 41m. 59s. M. 3' 22/ 7 42 South of D's Centre. D's S. D. at Im. 14' 56.5''; at Em. 14' 58.2". * 23'' } South of D's 0 5 52 M. 7 14 D's S. D. at Im. 15′ 10.0"; at Em. 15' 13.1". * August 27th. Occultation of n VS. D's S. D. at Im. 14' 46.3′′; at Em. 14′ 47.9′′ Star rises eclipsed Immersion 8h. 26m. Os. A. 8 53 5 7' 29" North of D's Centre. D's S. D. at Em. 15' 40.6". Occultation of n. +*November 29th. Oh. 8m. 41s. M. 0 37 52 13′ 42′′ South of D's 15 51 S Centre. D's S. D. at Im. 16' 1.2"; at Em. 16' 1.8". *Nov. 29th, 5h. 24m. M. Nearest Ap. D to μ П. * 1′ 39′′ South of D. Visible throughout or in some part of the United States, in Mean time for the Meridian of Greenwich, reckoned according to the Manner of Astronomers, who begin the day at the noon of the civil day and count the hours up to 24, or to the succeeding noon, when another day is commenced. 7. Position and Magnitude of the Rings of Saturn, according to h. 1832, Dec. 31 6 A. Bessel and Struve. -1°23′+3°10′ 41.68" 233°41' 190°36' +2.30" 1833, Feb. 1.97 232 55 189 50 SThe Earth coming into the plane of the Rings, they cease to be visible. The Earth again coming into the plane of the * The Earth will be above the plane of the Rings, until April 30th, 4h. A.; the rings will then disappear, and will continue invisible forty days, as, during that interval, their p. Angle of the semiconjugate axis of the ring with the circle of declination, positive when east, negative when west. 1. Angle of elevation of the Earth above the plane of the rings, as seen from Saturn, positive when north, negative when south. a. Semitransverse axis of the rings. b. Semiconjugate axis of the rings; positive when their northern surface is visible, negative when their southern. u. Longitude of the Earth as seen from Saturn, reckoned on the plane of the rings and from their ascending node in the equator. u'. The same longitude reckoned from their ascending node in the ecliptic. *** It has been recently discovered, that Saturn is not placed exactly in the centre of the rings. This singular circumstance was for some time considered an optical illusion, occasioned by the shadow of the planet on the ring; but Professor Struve has ascertained, with the celebrated Dorpat telescope, that the rings are actually eccentric. The eccentricity is, however, too small to be perceived by any other than the very best and most powerful telescopes. ASPECTS OF THE PLANETS IN 1833. The inferior planets (Mercury and Venus), from their superior to their inferior conjunctions, and the superior planets, from their opposition to their conjunction, pass the meridian between noon and midnight, and usually set in the evening after the Sun. The inferior planets, from their inferior to their superior conjunctions, and the others, from their conjunctions to their oppositions, pass the meridian between midnight and noon, and usually rise before the Sun in the morning. southern side will not be illuminated by the sun. On June 9th, 0 M. the Earth will again come into, and then pass above, the plane of the rings, and render them visible for the remainder of the year. |