October, 1912. 



KNOWLEDGE. 



387 



After November 20th, Jupiter is too near the Sun for 

 convenient observation of satellite phenomena. 

 Table 44. 



Satellite phenomena visible at Greenwich, l*" 4'' 46" 42* 

 III. Ec. R. ; 6" 4" 35"° I. Tr. I. ; 5" 17" I. Sh. I. ; 7" 4" 37" 35' 

 I. Ec. R. ; 9* 5" 3" II. Oc. D. ; 18" 4" 4S" II. Tr. E. 



All the above are in the evening hours. 



The eclipse reappearances of I. II. and both phases of 

 those of III. occur high right of the inverted image, taking 

 the direction of the belts as horizontal. 



Satl'RX is in opposition on 23rd. Polar semi-diameter 9A". 

 The major axis of the ring is 475", the minor axis 19']". The 

 ring is now approaching its maximum opening and projects 

 beyond the poles of the planet. 



East elongations of Tethys (everv fourth given). Xovember 

 l" 6*'-9 e, g" S^-O w, 16" 9'''-2 e, 24" 10''-3 m. Dione (every 

 third given). November l" l^o c, 9" 6^-5 c. 17" ll''-4 c, 

 26" 4" -4 m. 



Rhea (every second given). November 3" 7''-6 iii, 12" S""- 3 in, 

 21" 8''-9 m, 30" 9^-6 in. 



For Titan and lapetus, E. W. mean East and West 

 elongations, I., S. Inferior and Superior Conjunction, Inferior 

 being to the North, superior to the South. Titan, 4" l''-4 »» W.. 

 7" ll''-7 e S., 12" 2''-7 in E.. 16" 3''-l in I., 19" ll^-O e W., 

 23" 9''-2 c S., 27" 12''-0 e E. lapetus 12"3''-6 c E. 



Uranus is an evening Star, semi-diameter 2". It is 7J° 

 South of Alpha Capricorni, 5° South-West of Beta. 



Neptune is a morning star, not yet very well placed. 



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



Double Stars.— The limits of R.A. are l"" to 3". 



Table 45. 



