Sketch as many of the double/multiple star systems as we are able
to observe, noting the following characteristics:
(a) Relative brightness of the stars (use bigger or smaller dots);
(b) Apparent separation of the stars (compared to others seen tonight);
(c) Colors of the stars (write on sketch — indicate stars).
| β Lyrae |
multiple star
d = 882 ly |
|
| ε Lyrae |
quadruple star!
d = 161 ly |
|
| |
| β Cygni |
apparent double
dorange = 385 ly
dblue = 376 ly |
|
| 61 Cygni |
double star
d = 11.4 ly |
|
| |
| γ Delphinus |
double star
d = 102 ly |
|
| 70 Ophiuchus |
double star
d = 16 ly
P = 88 yr |
|
| |
| β Cepheus |
double star
d = 595 ly |
|
| δ Cepheus |
double star
d = 980 ly |
|