Celestial P/ienomena, October 1825 — January 1826. 383 



Occultation of Saturn, by the Moon 

 On the 30th of October there will be an Occultation of the planet Sa- 

 turn, by the Moon. The following are the Elements, and principal re- 

 sults of a calculation for Edinburgh; using the Decimal Tables of Saturn 

 by Bouvard, the Solar Tables of Delambre, and Lunar Tables of Burck- 

 hardt. 



H. M. 



Geocentric <$ of the ) and T? at Edinburgh, Mean Time. 



October, 30 



apparent time, 



Geocentric Conjunction in Longitude, . . 



Sun's Right Ascension, - 



-horary motion in Right Ascension, 

 Apparent Obliquity of the Ecliptic, ... 



Moon's Latitude, South increasing, . . 



— — equatorial horizontal parallax, . . 



— — — horary motion in Longitude, . 



■ —in Latitude, ... 



Saturn's Geocentric Latitude, South, .... 



Instants assumed, Appar. Time, 

 Right Ascension of the Meridian, 

 Moon's true Longitude, . 



true Latitude, South, 



Altitude of the Nonagesimal, 

 Longitude of the Nonagesimal, 

 Parallax in Longitude, 

 Parallax in Latitude, 



Appar. din". Long. ) and U 



Appar. difT. Lat. ) and ^2 

 Sun's Ap. mot. in 1 min. of time, 

 Errors from Instants assumed, 



For the Immersion. 



s. 



12,81 

 15,64 

 39,1(1 

 9,19 

 56,0 

 13,7 

 51,19 

 7 21,01 



15 19,91 

 34,1' 



— 12,83 



II. 



8 



335<i 



80 



31 

 12 



+ 



M. S 



2 12,81 

 20 18,08 

 37 9,97 



46 11,97 

 33 46,5 

 32 12,5 



26 53,93 



47 18,24 



14 46,30 

 54,16 



. 33,16 



+ 20,73 



For the Emersion. 



H. M. S. 

 8 57 12,81 

 349° 7 32,12 

 81 5 27,65 

 48 45,13 

 36 47 0,1 

 22 47 43,8 



+ 28 16,41 

 44 39,43 



11 55,86 



41,81 



— 14,64 



H. M. S. 



8 58 12,81 

 iiy° 22 34,56 

 81 5 58,52 

 48 47,90 

 30 52 31,2 

 22 5S 25,2 



+ 28 16,99 



44 36,44 



15 25,31 



40,02 



31,53 

 + 16,69 



Apparent Time of Immersion, 



1 55,75 



Emersion, 



h. ni. a. 

 8 57 40,85 



Hence the final results are as follows, Mean time. 



D. H. M. S. 



Immersion, October 30. 7 45 24,17 

 Emersion, 8 41 20 



,17 J at 34", 17) South of the 

 ,17J_40, 93 J ('s centre. 



The apparent semidiameter of Saturn being liable to some uncertainty, has not 

 been used in the calculation. 



Eclipse of the Moon. 

 On the 25th of November, there will be a small Eclipse of the Moon, partly visible. 



D. H. M. S. 



November 25 



The Eclipse begins, 



Moon rises Eclipsed, 



Ecliptic opposition, 



Middle, 



End of the Eclipse, 



2 59 19 



3 12' 56 

 3 46 10 



3 56 24 



4 53 30 



Digits Eclipsed, 2° 57' 6", by the north side' of the Earth's shadow, or 00 the 

 south part of the Moon's disc. 



