White main-sequence star · Corona Australis
ζ Coronae Australis
Also known as: ζ CrA, HIP 93542
mag 4.7190 light-years
About
ζ Coronae Australis is a white main-sequence star of magnitude 4.7 in Corona Australis, about 190 light-years away.
How to find it
- ζ Coronae Australis is in the constellation Corona Australis.
- Best evenings: around late August 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 south of 38° N.
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
- EyesNeeds a dark sky away from city lights.
- 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 | ζ Coronae Australis (ζ CrA) |
|---|---|
| Hipparcos number | HIP 93542 |
| Type | White main-sequence star |
| Spectral type | A0Vn |
| Colour | WhiteB−V colour index −0.03 |
| Magnitude | 4.7The smaller the number, the brighter. |
| Distance | 190 light-yearsThe light you see left it around 1830. |
| Proper motion | 0.072″ per year across the sky |
| Constellation | Corona Australis |
| Right ascension (J2000) | 19h 03m 06.9s |
| Declination (J2000) | −42° 05′ 42″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →