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).
| η Cassiopeia |
double star
d = 19 ly
P = 480 yr |
|
| σ Cassiopeia |
double star
d = 1500 ly |
|
| |
| ι Cassiopeia |
triple star
d = 142 ly |
|
| γ Andromeda |
triple star
d = 355 ly |
|
| |
| ε Pegasus |
triple star?
d = 670 ly |
|
| α1 α2 Capricornus |
apparent double
d1 = 690 ly
d2 = 109 ly |
|
| |
| α Ursa Minor |
double star
d = 431 ly |
|
| η Persei |
double star
d = 1300 ly |
|
| |
| β Orionis |
double star
d = 770 ly |
|
| σ Orionis |
multiple star
d = 1100 ly |
|