Yellow giant · Corona Australis
θ Coronae Australis
Also known as: θ CrA, HIP 90982
mag 4.6560 light-years
About
θ Coronae Australis is a yellow giant of magnitude 4.6 in Corona Australis, about 560 light-years away.
How to find it
- θ Coronae Australis is in the constellation Corona Australis.
- Best evenings: around mid-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 | θ Coronae Australis (θ CrA) |
|---|---|
| Hipparcos number | HIP 90982 |
| Type | Yellow giant |
| Spectral type | G5III |
| Colour | Pale orangeB−V colour index 0.99 |
| Magnitude | 4.6The smaller the number, the brighter. |
| Distance | 560 light-yearsThe light you see left it around 1470. |
| Proper motion | 0.039″ per year across the sky |
| Constellation | Corona Australis |
| Right ascension (J2000) | 18h 33m 30.2s |
| Declination (J2000) | −42° 18′ 45″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →