This chapter describes the Galactic star forming regions in the constellation Cassiopeia , in the Galactic coordinate range 120 \hbox { $ { } ^ { \circ } $ } \mathrel { \hbox { \hbox to 0.0 pt { \hbox { \lower 4.0 pt \hbox { $% \sim$ } } } \hbox { $ < $ } } } l \mathrel { \hbox { \hbox to 0.0 pt { \hbox { \lower 4.0 pt \hbox { $% \sim$ } } } \hbox { $ < $ } } } 130 \hbox { $ { } ^ { \circ } $ } , -5 \hbox { $ { } ^ { \circ } $ } \mathrel { \hbox { \hbox to 0.0 pt { \hbox { \lower 4.0 pt \hbox { $% \sim$ } } } \hbox { $ < $ } } } b \mathrel { \hbox { \hbox to 0.0 pt { \hbox { \lower 4.0 pt \hbox { $% \sim$ } } } \hbox { $ < $ } } } 15 \hbox { $ { } ^ { \circ } $ } .
At |b| > 10 \hbox { $ { } ^ { \circ } $ } the nearby clouds L 1333 and L 1340 are found in this region .
The local arm of the Galaxy in Cassiopeia contains only a few star forming regions , smaller and less active than the OB associations of the neighboring Cepheus .
Five members of this system , LkH \alpha 198 and its environment , L 1287 , L 1293 , L 1302/NGC 255 , and S 187 are discussed .
Several more distant OB associations and giant star forming regions in Cassiopeia are associated with the Perseus arm at 2.0–3.0 kpc .
Among these , the Herbig Be star MWC 1080 is discussed in this chapter .