Yellow giant · Delphinus

Musica

Also known as: 18 Delphini (18 Del), HIP 103527

mag 5.5250 light-years

About

Musica (18 Delphini) is a yellow giant of magnitude 5.5 in Delphinus, about 250 light-years away.

Musica is in the constellation Delphinus.
Best evenings: around mid-September 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 69° 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.

EyesNeeds a dark sky away from city lights.
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	Musica
Designation	18 Delphini (18 Del)
Hipparcos number	HIP 103527
Type	Yellow giant
Spectral type	G6III:
Colour	Pale orangeB−V colour index 0.93
Magnitude	5.5The smaller the number, the brighter.
Distance	250 light-yearsThe light you see left it around 1780.
Proper motion	0.059″ per year across the sky
Constellation	Delphinus
Right ascension (J2000)	20h 58m 25.9s
Declination (J2000)	+10° 50′ 21″

Star data: HYG Database by David Nash, CC BY-SA 4.0. All data sources →