November, 1913. 



KNOWLEDGE. 



Table 85. Occultations of stars by the Moon visible at Greenwich. 



437 



From New to Full disappearances take place at the Dark Limb, from Full to New reappearances. 



The asterisk indicates the day following that given in the date column. Attention is called to the occultation of the Pleiades, on 



Dec. 11th, the Moon being 2 days before Full. 



Saturn is very well placed for observation, being in 

 opposition on the 7th. Polar semi-diameter 9J". P. is 

 — 4°-4; B — 26°-4. Ring major axis 48", minor 21". The ring 

 is approaching its maximum opening, and projects beyond the 

 poles of the planet. It is interesting to measure the exact 

 amount of overlap. 



East Elongations of Tethys (every fourth given), l d 10 h, lw, 

 8 d ll h -2e, 16" h -4e, 24 d l h -5w, 31 d 2 h -7e; Dione (every 

 third given), 6 d 6 h -2m, 14 d ll"-lm, 22 d 4 h -le, 30 d 9 k -le; 

 Rhea (every second given), 6 d h -9m, 15 d l b -5m, 24 J 2 h -2«J. 

 For Titan and Iapetus E.W. mean East and West Elonga- 

 tions; I. Inferior (North) Conjunctions, S. Superior (South) 

 ones. Titan, 2 d ll h -8m E.; 7 d l h -7m I., 12 d 9 h -8e W., 

 18 d 10 h -3e S., 23 d 4"-le E., 28 d 6 h -2m I.; Iapetus, 17 d 9 h -l*» 



Uranus is an evening star, but badly placed. 

 Neptune is a morning star, in Cancer. 

 Meteor Showers (from Mr. Denning's List) :- 



Westphal's Comet. — The following ephemeris covers the 



whole time over which the comet is likely to be visible with 



ordinary telescopes : it is likely to be a faint naked-eye object 



•in November. The ephemeris is for midnight on the dates 



named. 



The path lies through Vulpecula, Cygnus, Cepheus, and 

 Cassiopeia. 



