Orange giant · Draco

Tianyi

Also known as: 7 Draconis (7 Dra), HIP 62423

mag 5.4740 light-years

About

Tianyi (7 Draconis) is an orange giant of magnitude 5.4 in Draco, about 740 light-years away.

Tianyi is in the constellation Draco.
Best evenings: around mid-May 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 13° 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	Tianyi
Designation	7 Draconis (7 Dra)
Hipparcos number	HIP 62423
Type	Orange giant
Spectral type	K5III
Colour	Orange-redB−V colour index 1.57
Magnitude	5.4The smaller the number, the brighter.
Distance	740 light-yearsThe light you see left it around 1290.
Proper motion	0.005″ per year across the sky
Constellation	Draco
Right ascension (J2000)	12h 47m 34.3s
Declination (J2000)	+66° 47′ 25″

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