and positions of ^^S double and triple stars, &c. 287 



No. DCCXCV. R. A. 2i»» ss"" ; Decl. 56° 41' N. 



Struve, 728 ; P. XXI. 248 ; III. 71. 

 Triple ; A 7th, B 9t, and C of the 9th magnitudes. 



Measures of A B. 

 Passy ; October 4, 1824 ; Seven-feet Equatorial. 



Position = 32° 12' sf\ 5 Obs. I DifF. z= 1' 25' ) 



Distance= i2".22i j 5 Obs. j Diff. = o".i68 5 • • • • 



Passy; November 16, 1824; Seven-feet Equatorial. 

 7th and 10th magnitudes. 



Position = 30° 54' sf I 5 Obs. 

 Distance = i i'.bg^ \ 5 Obs. 



Diff. = 1° 24' ) ^._ ,^ 

 Diff. =o".889l^'®^"^*- 



Measures of A C. 



Passy ; October 4, 1824 ; Seven-feet Equatorial. 



7th and 9th magnitudes. 



Position = 68° 35' np 1 5 Obs. I Diff. = 1° 20' ) 



Distance = i9".233 | 5 Obs. | Diff. = i".o58 j • • • • 



Passy; November 16, 1824; Seven-feet Equatorial. 



7th and 9th magnitudes. 



Position = 69° 32' «;> I 5 Obs. I Diff. = 1° 48' ) 



Distance = 19".543 { 5 Obs. J Diff. = i ".05 8 J • • • • 



Mean Result. 



of A. B. Position 31° 33' sf; Distance ii".945; 



of AC. Position 69° 3^ np; Distance 19". 3 88 ; 



Epoch 1824.81. 



These measures compared with those of 1783 give a 



change of — 3° 51' in angle and +o".3 in distance for the 



nearer star B, and — 4° 54' and -f o".77 for the more distant 



one C. If these changes arise from real motions, and be not 



merely errors of observation, they cannot be accounted for 



by supposing the stars B and C at rest, and the central star 



A only in motion. { H. ) 



