Star profile
12 Cassiopeiae
Hot blue starWhat is 12 Cassiopeiae
12 Cassiopeiae reaches us from 702 light-years away: the light we see today set out when the Normans were sailing toward Sicily. It is a hot, young blue-white B-type, perched on the unmistakable W of Cassiopeia. The vain queen, bound to her throne in punishment, wheels endlessly around the celestial north pole —and this star wheels with her, turn after turn.
Where it is and when to see it
12 Cassiopeiae lies in the northern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is November, when it culminates around midnight.
- From London it never sets and culminates about 80° up.
- From New York it never sets and culminates about 69° up.
- From Sydney it never rises above the horizon.
It can be seen from anywhere north of 28° S.
It ranks no. 43 in brightness among the 93 stars of Cassiopeia in our catalogue. To find it, start from Cih, the brightest: it lies about 4° away (a fist at arm's length covers about 10°).
The light you see today left it about 700 years ago.
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Astronomical data for 12 Cassiopeiae
- Constellation
- Cassiopeia
- Apparent magnitude
- 5.38
- Distance
- 701.5 light years
- Coordinates (J2000)
- RA 6.198° · Dec 61.831°
- Catalogue
- HIP 1960 · HD 2011
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Other stars in Cassiopeia
Cassiopeia has 93 stars in Stelvia's catalogue. Here are a few of them.
- CihGamma Cassiopeiae2.15
- SchedarAlpha Cassiopeiae2.24
- CaphBeta Cassiopeiae2.28
- HIP 93125.29
- 31 Cassiopeiae5.32
- HIP 39515.35
- HIP 35445.41
- 23 Cassiopeiae5.42