Star profile
40 Cassiopeiae
What is 40 Cassiopeiae
40 Cassiopeiae is a yellow, somewhat evolved star in northern Cassiopeia, the W-shaped silhouette every northern-hemisphere stargazer learns to recognise before even the Plough. At 458 light-years away, it does not stand out within the constellation, but its light shares the same field threaded by the autumn Milky Way. The flicker now visible left its surface as the great Renaissance humanists were beginning to turn Europe upside down.
Where it is and when to see it
40 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 68° up.
- From New York it never sets and culminates about 58° up.
- From Sydney it never rises above the horizon.
It can be seen from anywhere north of 17° S.
It ranks no. 39 in brightness among the 93 stars of Cassiopeia in our catalogue. To find it, start from Cih, the brightest: it lies about 13° away (a fist at arm's length covers about 10°).
The light you see today left it about 460 years ago.
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Astronomical data for 40 Cassiopeiae
- Constellation
- Cassiopeia
- Apparent magnitude
- 5.28
- Distance
- 458.1 light years
- Coordinates (J2000)
- RA 24.629° · Dec 73.040°
- Catalogue
- HIP 7650 · HD 9774
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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
- 42 Cassiopeiae5.18
- 49 Cassiopeiae5.22
- 47 Cassiopeiae5.27
- HIP 93125.29
- 31 Cassiopeiae5.32