White main-sequence star · Pegasus

Biham

Also known as: θ Pegasi (θ Peg), HIP 109427

mag 3.592 light-years

About

Biham (θ Pegasi) is a white main-sequence star of magnitude 3.5 in Pegasus, about 92 light-years away.

Biham is in the constellation Pegasus.
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 north of 74° S.

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.

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.

Proper name	Biham
Designation	θ Pegasi (θ Peg)
Hipparcos number	HIP 109427
Type	White main-sequence star
Spectral type	A2V
Colour	WhiteB−V colour index 0.09
Magnitude	3.5The smaller the number, the brighter.
Distance	92 light-yearsThe light you see left it around 1934.
Proper motion	0.28″ per year across the sky
Constellation	Pegasus
Right ascension (J2000)	22h 10m 12.0s
Declination (J2000)	+06° 11′ 52″