II. Monday, June 20th. A partial eclipse of the Moon, invisible in the United States. III. Wednesday, November 30th. A total eclipse of the Sun, invisible in the United States. Beginning of the general eclipse, Nov. 30th, 11h. 29.5m. M. (mean time at Washington), in latitude 19° 47′ N., and longitude 153° 56′ W. of Greenwich. Beginning of the central and total eclipse, 30th day, 0h. 25.6m. A., in latitude 23° 5' N., and longitude 166° 27′ W. of Greenwich. Central eclipse at noon, 30th day, 2h. 2.1m. A., in latitude 11° 20' S., and longitude 110° 18′ W. of Greenwich. End of the central and total eclipse, 30th day, 3h. 48.2m. A., in latitude 4° 16' S., and longitude 45° 8' W. of Greenwich. End of the general eclipse, 30th day, 4h. 44.4m. A., in latitude 7° 35′ S., and longitude 57° 49′ W. of Greenwich. The central line passes over the points on the earth's surface whose positions are, This eclipse is visible in South America and Mexico. OCCULTATIONS. Elements for facilitating the Calculation of Occultations which may be visible in the United States in 1853. 5 Limiting Parallels between Apparent Declination of Star. Star N or S. of which the Occult, is 16 3 25.29 19 " 4 22.98. 4 54 18.81 21 22 30.7N. A Table showing the Illuminated Portions of the Disks of Venus and Mars. THE numbers in this table are the versed sines of that portion of the disks which, to an observer on the Earth, will appear to be illuminated, the apparent diameters of the planets at the time being considered as unity. To a spectator on the Earth, Venus appears most brilliant when her elongation is about 40°, and she is approaching her inferior conjunction, or receding from it; in which position she will not be this year. The inferior conjunction will not take place this year. Mars is most brilliant about the time of his opposition to the Sun, being then also nearest the Earth; in which position he will not be this year. |