Star profile
Iota Cassiopeiae
Variable starWhat is Iota Cassiopeiae
Iota Cassiopeiae is a white A-type star whose light reaches Earth after 133 years of travel. It belongs to the retinue of Cassiopeia, the queen seated on her throne whose W-shape dominates the northern circumpolar sky. Catalogued as slightly variable, its brightness shifts almost imperceptibly —small fluctuations that only the patient eye and modern instruments can pick out from the otherwise fixed stage of the constellations.
Where it is and when to see it
Iota 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 74° up.
- From New York it never sets and culminates about 63° up.
- From Sydney it never rises above the horizon.
It can be seen from anywhere north of 23° S.
It ranks no. 11 in brightness among the 93 stars of Cassiopeia in our catalogue. To find it, start from Cih, the brightest: it lies about 12° away (a fist at arm's length covers about 10°).
The light you see today left it about 130 years ago.
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Astronomical data for Iota Cassiopeiae
- Constellation
- Cassiopeia
- Apparent magnitude
- 4.46
- Distance
- 132.9 light years
- Coordinates (J2000)
- RA 37.267° · Dec 67.402°
- Catalogue
- HIP 11569 · HD 15089
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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
- 50 Cassiopeiae3.95
- Kappa Cassiopeiae4.17
- Theta Cassiopeiae4.34
- Omicron Cassiopeiae4.48
- 48 Cassiopeiae4.49