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: the Sun sits at the opposite point of the sky and the star culminates around midnight. How high it climbs above the horizon depends on the latitude you watch from.
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The signature wall
Stelvia's sky works like a signature wall: anyone can leave their name and a message on a real star, and that signature goes up on the map for everyone to read. Signing is free.
A signature without a lock can be replaced by someone else's. The lock makes the signature permanent and lets you choose a symbolic name for the star, always shown next to the star's catalogue identifier. How the lock works
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A public signature from a real person. The chosen name is a symbolic denomination within Stelvia, with no official standing or IAU recognition: the sky is not for sale and belongs to no one.
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
A symbolic commemorative gift: neither the signature nor the chosen name implies ownership of the star or recognition by the IAU.
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