Star profile
1 Cassiopeiae
Hot blue starWhat is 1 Cassiopeiae
1 Cassiopeiae is a blue giant of class B0.5 III, so hot and luminous that astronomers have proposed it as a standard reference for its spectral class. It burns at 27,200 K —nearly five times hotter than the Sun— and pours out eighteen thousand times its light from 1,129 light-years away. The beam reaching us tonight left in the depths of the Middle Ages, before any Gothic cathedral in Europe had yet been built.
Where it is and when to see it
1 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 October: 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
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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 1 Cassiopeiae
- Constellation
- Cassiopeia
- Apparent magnitude
- 4.84
- Distance
- 1128.7 light years
- Coordinates (J2000)
- RA 346.653° · Dec 59.420°
- Catalogue
- HIP 114104 · HD 218376
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
- Xi Cassiopeiae4.80
- HIP 41514.80
- Upsilon 1 Cassiopeiae4.83
- HIP 148624.85
- Tau Cassiopeiae4.88