Yellow-white star · Corona Borealis
Nusakan
Also known as: β Coronae Borealis (β CrB), HIP 75695
mag 3.7110 light-years
About
Nusakan (β Coronae Borealis) is a yellow-white star of magnitude 3.7 in Corona Borealis, about 110 light-years away.
How to find it
- Nusakan is in the constellation Corona Borealis.
- Best evenings: around late June 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 51° 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
| Proper name | Nusakan |
|---|---|
| Designation | β Coronae Borealis (β CrB) |
| Hipparcos number | HIP 75695 |
| Type | Yellow-white star |
| Spectral type | F0p |
| Colour | Yellowish whiteB−V colour index 0.32 |
| Magnitude | 3.7The smaller the number, the brighter. |
| Distance | 110 light-yearsThe light you see left it around 1910. |
| Proper motion | 0.20″ per year across the sky |
| Constellation | Corona Borealis |
| Right ascension (J2000) | 15h 27m 49.8s |
| Declination (J2000) | +29° 06′ 21″ |
More in Corona Borealis
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →