Blue-white supergiant · Cassiopeia
κ Cassiopeiae
Also known as: κ Cas, HIP 2599
mag 4.2
About
κ Cassiopeiae is a blue-white supergiant of magnitude 4.2 in Cassiopeia.
How to find it
- κ Cassiopeiae is in the constellation Cassiopeia.
- Best evenings: around mid-November it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
- Where on Earth: it is seen well, at least 10° up, from north of 17° S.
When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.
What you will see
- EyesVisible from the suburbs on a clear night, but lost in bright city skies.
- Binoculars (10×50)A sharp point; binoculars bring out its colour and the fainter stars around it.
- Telescope (6–8 inch)Still a point of light at any magnification — stars are too far away to show a disc. Low in the sky, bright stars twinkle and flash colours.
Stars look the same in any instrument: brighter and sharper, but never bigger.
Facts
| Designation | κ Cassiopeiae (κ Cas) |
|---|---|
| Hipparcos number | HIP 2599 |
| Type | Blue-white supergiant |
| Spectral type | B1Ia |
| Colour | WhiteB−V colour index 0.13 |
| Magnitude | 4.2The smaller the number, the brighter. |
| Proper motion | 0.005″ per year across the sky |
| Constellation | Cassiopeia |
| Right ascension (J2000) | 00h 33m 00.0s |
| Declination (J2000) | +62° 55′ 54″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →