Ball — Observations on Nova Andromedce. made at Dunsink. 641 



XXXVIII. — Obsertations on I^ova Andromeda, made at Dttnsink:. 

 By Sir Egbert S. Ball, LL.D., F.E.S. 



[Read, May 24, 1886.] 



Professor Asaph Hall has recently published a series of observations 

 of Nova Andromedse, conducted with the object of seeing whether this 

 star had a parallax. 



I made with a similar object a series of observations last autumn 

 and winter with the south equatorial at Dunsink. These I desire to 

 place on record in the Academy. I used two amparum stars, of which 

 the first was that also employed by Professor Hall. 



From Nova And/romedm to Star 10 fh, mag. p. 





DATE. 



distance. 



position-angle 



Sept. 



21, 1885, 110"'0 



262° 0' 



J} 



30, , 



110-6 



261 6 



Oct. 



3, , 



108-9 



261 46 



>5 



27, , 



, 109-0 



262 41 



J7 



28, , 



109-8 



263 19 



Nov. 



4, , 



109-9 



262 17 



}} 



30, , 



, 109-5 



260 36 



Dec. 



1, , 



109-7 



261 22 



>> 



2, , 



108-7 



262 7 



)} 



7, , 



109-8 



260 47 



55 



8, , 



109-1 



261 13 



)i 



9, , 



, 108-3 



261 35 



From Nova Andromeda to Star lltk, mag. s.f. 



156°33' 

 156 25 



156 17 

 155 29 



155 35 



157 3 



156 36 



Sept. 3, 1885, 



229"-' 



Oct. 3, ,, 



230-2 



Nov. 4, ,, 



— 



„ 30, „ 



228-8 



Dec. 1, ,, 



228-3 



„ 2, „ 



229-5 



„ 9, „ 



229-4 



