3% Dr. Herschel’s Account of the Changes 
accompanied with very little angular change in their position. 
The little difference in the magnitude of the two stars, however, 
does not well agree with a supposition which gives a parallactic 
motion to one of them only. 
y Andromeda. Ill, 5. 
It has already been noticed, on a former occasion, that this 
double star is one of the most beautiful objects in the heavens. 
The striking difference in the colour of the two stars, suggests 
the idea of a sun and its planet, to which the contrast of their 
unequal size contributes not a little. The position of the small 
star, when we consider that this double star is one of the third 
class, has undergone a sufficient change to deserve notice. In 
the year 1781, Oct. 15, it was 19 0 37' north -following. Feb. 3, 
1802, 26° 34'. Feb. 11, 1803, 26° 3'; and, Feb. 5, 1804, 27 0 39'. 
The difference, in 22 years and 113 days, is 8° 2'. The distance 
of the two stars is too great to be accurately estimated by their 
apparent diameters ; and measures taken with a micrometer, 
unless fractions of a second of space could be strictly ascer- 
tained, would be useless. If we suppose the small star sufficiently 
removed not to partake of the systematical parallax of the large 
one, the change of the angle of position may be accounted for, 
upon the principle of the solar motion. The stars, however, are 
hardly so different in magnitude as would be required for that 
purpose. We ought also to know, whether a proper motion has 
been observed in this star. 
p Draconis. II, 13. 
The change in the relative situation of the two stars of this 
double star is pretty considerable. The position, bept. 24, j8oi. 
