Yellow-white main-sequence star · Piscis Austrinus
τ Piscis Austrini
Also known as: τ PsA, HIP 109422
mag 4.960 light-years
About
τ Piscis Austrini is a yellow-white main-sequence star of magnitude 4.9 in Piscis Austrinus, about 60 light-years away.
How to find it
- τ Piscis Austrini is in the constellation Piscis Austrinus.
- Best evenings: around early October 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 47° 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 | τ Piscis Austrini (τ PsA) |
|---|---|
| Hipparcos number | HIP 109422 |
| Type | Yellow-white main-sequence star |
| Spectral type | F6V |
| Colour | YellowB−V colour index 0.49 |
| Magnitude | 4.9The smaller the number, the brighter. |
| Distance | 60 light-yearsThe light you see left it around 1966. |
| Proper motion | 0.43″ per year across the sky |
| Constellation | Piscis Austrinus |
| Right ascension (J2000) | 22h 10m 08.7s |
| Declination (J2000) | −32° 32′ 54″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →