Cygni Sentence Examples

In 1812 Bessel measured with it the angle between the components of the double star 61 Cygni and observed the great comet of 1811.

X Cygni is another star of this class, remarkable for its range of magnitude.

Bessel announced, in December 1838, the perspective yearly shifting of 61 Cygni in an ellipse with a mean radius of about one-third of a second.