Blue-white subgiant · Cassiopeia

Fulu

Also known as: ζ Cassiopeiae (ζ Cas), HIP 2920

mag 3.7590 light-years

About

Fulu (ζ Cassiopeiae) is a blue-white subgiant of magnitude 3.7 in Cassiopeia, about 590 light-years away.

Fulu is in the constellation Cassiopeia.
Best evenings: around mid-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 26° 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	Fulu
Designation	ζ Cassiopeiae (ζ Cas)
Hipparcos number	HIP 2920
Type	Blue-white subgiant
Spectral type	B2IV
Colour	Blue-whiteB−V colour index −0.20
Magnitude	3.7The smaller the number, the brighter.
Distance	590 light-yearsThe light you see left it around 1430.
Proper motion	0.020″ per year across the sky
Constellation	Cassiopeia
Right ascension (J2000)	00h 36m 58.3s
Declination (J2000)	+53° 53′ 49″