Blue-white subgiant · Scorpius

Xamidimura

Also known as: μ¹ Scorpii (μ¹ Sco), HIP 82514

mag 3.0500 light-years

About

Xamidimura (μ¹ Scorpii) is a blue-white subgiant of magnitude 3.0 in Scorpius, about 500 light-years away.

Xamidimura is in the constellation Scorpius.
Best evenings: around mid-July 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 42° 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.

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	Xamidimura
Designation	μ¹ Scorpii (μ¹ Sco)
Hipparcos number	HIP 82514
Type	Blue-white subgiant
Spectral type	B1.5IV + B
Colour	Blue-whiteB−V colour index −0.20
Magnitude	3.0The smaller the number, the brighter.
Distance	500 light-yearsThe light you see left it around 1530.
Proper motion	0.023″ per year across the sky
Constellation	Scorpius
Right ascension (J2000)	16h 51m 52.2s
Declination (J2000)	−38° 02′ 51″