Cassiopeia, the Mother of Andromeda (Cas)
(CASS-ee-uh-PEE-uh)
The constellation of Cassiopeia, the Mother of Andromeda, is best viewed in Fall during the month of November. It's brightest star is Schedar at magnitude 2.24. The boundary of the Cassiopeia constellation contains 14 stars that host known exoplanets.
- Pronunciation:
- CASS-ee-uh-PEE-uh
- Meaning:
- Mother of Andromeda
- Genitive:
- Cassiopeiae
- Abbreviation:
- Cas
- Constellation Family:
- Perseus
- Hemisphere:
- Northern
- Quadrant:
- NQ1
- Best viewing month*:
- November
- Circumpolar** (N=northern, S=southern):
- N
- Right Ascension (avg):
- 0h 52m
- Declination (avg):
- 60° 18'
- Meteor showers:
- Perseids
- Brightest star:
- Schedar (2.24)
- Stars with planets:
- 14
- X-ray stars:
- 3 (pulsars) stars
- Gamma-ray stars:
- 1 stars
Double Stars in Cassiopeia
These are the brightest and easiest-to-find double, triple, and quadruple star systems in the constellation Cassiopeia.
- Star system
- Magnitudes
- Type
- Eta Cassiopeiae
- 3.5, 7.4
- double
- Sigma Cassiopeiae
- 5.0, 7.2
- double
Star Clusters in Cassiopeia
The most notable, famous, and easy-to-find star clusters in the constellation Cassiopeia :
- Star cluster
- Catalog #
- Cluster type
- Caroline's Rose
- open
- Messier 103
- M103
- open
- Messier 52
- M52
- open
- NGC 129
- open
- NGC 189
- open
- NGC 225
- open
- NGC 381
- open
- NGC 637
- open
- NGC 659
- open
- NGC 663
- open
- Owl Cluster
- C13
- open
Nebulae in Cassiopeia
The most notable, famous, and easy-to-find nebulae in the constellation Cassiopeia :
- Nebula name
- Catalog #
- Nebula type
- Bubble Nebula
- C11
- diffuse
- Cassiopeia A
- supernova remnant
- Dolphin Nebula
- planetary
- Fish Head Nebula
- emission
- Heart Nebula
- diffuse
- Pacman Nebula
- emission
- Soul Nebula
- emission
- Tycho's Supernova
- supernova remnant
Galaxies in Cassiopeia
The most notable, famous, and easy-to-find galaxies in the constellation Cassiopeia:
Neutron Stars in Cassiopeia
These are the most well-known neutron stars in the constellation Cassiopeia. Although neutron stars cannot be seen in any amateur telescope, they are at the center of many supernova remnant nebulae, which can be seen.
Exoplanets in Cassiopeia
These are the most notable named exoplanet systems known in the constellation Cassiopeia. Bear in mind that we will likely discover billions of exoplanets in the years to come.
* For southern latitudes, flip the season listed. For example, if a constellation is listed as best viewed in the summer in the month of July, in the southern hemisphere the constellation would be best viewed in the winter in January and would be upside-down.
** Circumpolar constellations are visible year-round in the hemisphere listed (and not at all in the opposite).