Blue-white main-sequence star · Piscis Austrinus
ι Piscis Austrini
Also known as: ι PsA, HIP 107380
mag 4.4200 light-years
About
ι Piscis Austrini is a blue-white main-sequence star of magnitude 4.4 in Piscis Austrinus, about 200 light-years away.
How to find it
- ι 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
- 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 | ι Piscis Austrini (ι PsA) |
|---|---|
| Hipparcos number | HIP 107380 |
| Type | Blue-white main-sequence star |
| Spectral type | B9.5V |
| Colour | WhiteB−V colour index −0.05 |
| Magnitude | 4.4The smaller the number, the brighter. |
| Distance | 200 light-yearsThe light you see left it around 1820. |
| Proper motion | 0.099″ per year across the sky |
| Constellation | Piscis Austrinus |
| Right ascension (J2000) | 21h 44m 56.8s |
| Declination (J2000) | −33° 01′ 33″ |
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →