1. Abbreviation: Cas
2. Symbolism: The seated queen
3. Brightest star: Schedar (α Cas)
4. Nearest Star: Achird (η Cas)
5. Area covered in sky: 598 sq. deg.
6. Approximate declination: +60°
7. Approximate right ascension: 1 h
8. Visible from: latitudes between +90° and -20°
9. Bordering constellations: Camelopardalis, Cepheus, Perseus, Lacerta, Andromeda
10. Messier objects: Messier 52 and Messier 103 (both open clusters)
11. Other interesting objects: IC 59 and 63, NGC 281, 7635 and 7789.
12. Best visible: 2100 hrs in the month of November
13. Mythology: Cassiopeia was the wife of Cepheus and the mother of Andromeda. Because she thought herself more beautiful than the daughters of Nereus, a god of the sea, she challenged the anger of the god Poseidon. To punish her, her daughter was chained to a rock on the coast as a sacrifice for a sea monster. Andromeda was saved from death by Perseus. To learn humility, Cassiopeia was banned to the sky hanging half of the time head downward.
Image: A constellation map of Cassiopeia (Image credit: Wikimedia Commons under a GNU Free Documentation license.)