ASTRONOMICAL NOTES FOR DECEMBER, 188 1. 497 



14 



29 



Apparent diameter on the ist 5. 6", on the 31st 4.6". On the 4th 3h. A. M. 

 it is 1° 23' east of Venus. 



VENUS. 



Apparent diameter on the 15th 10.4", being about yi of the apparent size 

 when nearest to the earth. The disk will be nearly round. 



MARS. 

 Date. Right Ascension. Declination N. M. T. of Meridian Passage. 



I St. 



5th. 

 loth. 

 15th. 

 20th. 

 25 th. 

 31st. 



On the 26th it will be in opposition or 180° from the Sun, and in the best 

 position for observation. Apparent diameter on the 27th, 16.6" 



JUPITER. 

 Date. Right Ascension. Declination N, M. T. of Meridian Passage. 



ISt. 

 5th. 

 loth. 

 15th. 

 20th. 

 25th. 

 31st. 



Apparent diameter on the 15th, 44.9", and is slowly decreasing during the 

 entire month. 



Jupiter's satellites. 



Abbreviations used — In. denotes ingress; Eg., egress; Dis., disappearance; 

 Ec, eclipse; Oc, occultation; Tr., transit of the satellite; Sh., transit of the 

 shadow. 



