White main-sequence star · Leo

Subra

Also known as: ο Leonis (ο Leo), HIP 47508

mag 3.5130 light-years

About

Subra (ο Leonis) is a white main-sequence star of magnitude 3.5 in Leo, about 130 light-years away.

Subra is in the constellation Leo.
Best evenings: around early April 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 70° 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	Subra
Designation	ο Leonis (ο Leo)
Hipparcos number	HIP 47508
Type	White main-sequence star
Spectral type	A5V+
Colour	YellowB−V colour index 0.52
Magnitude	3.5The smaller the number, the brighter.
Distance	130 light-yearsThe light you see left it around 1900.
Proper motion	0.15″ per year across the sky
Constellation	Leo
Right ascension (J2000)	09h 41m 09.0s
Declination (J2000)	+09° 53′ 32″