Blue-white subgiant · Pegasus
Algenib
Also known as: γ Pegasi (γ Peg), HIP 1067
mag 2.8390 light-years
About
Algenib (γ Pegasi) is a blue-white subgiant of magnitude 2.8 in Pegasus, about 390 light-years away.
How to find it
- Algenib is in the constellation Pegasus.
- Best evenings: around early November 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 65° S.
- Star patterns: Great Square of Pegasus.
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
- EyesEasy, even from town.
- 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 | Algenib |
|---|---|
| Designation | γ Pegasi (γ Peg) |
| Hipparcos number | HIP 1067 |
| Type | Blue-white subgiant |
| Spectral type | B2IV |
| Colour | Blue-whiteB−V colour index −0.19 |
| Magnitude | 2.8The smaller the number, the brighter. |
| Distance | 390 light-yearsThe light you see left it around 1630. |
| Proper motion | 0.009″ per year across the sky |
| Constellation | Pegasus |
| Right ascension (J2000) | 00h 13m 14.2s |
| Declination (J2000) | +15° 11′ 01″ |
More in Pegasus
Sources and credits
Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →