Yellow giant · Eridanus

Theemin

Also known as: υ² Eridani (υ² Eri), HIP 21393

mag 3.8210 light-years

About

Theemin (υ² Eridani) is a yellow giant of magnitude 3.8 in Eridanus, about 210 light-years away.

Theemin is in the constellation Eridanus.
Best evenings: around mid-January 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 49° 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	Theemin
Designation	υ² Eridani (υ² Eri)
Hipparcos number	HIP 21393
Type	Yellow giant
Spectral type	G8III
Colour	Pale orangeB−V colour index 0.96
Magnitude	3.8The smaller the number, the brighter.
Distance	210 light-yearsThe light you see left it around 1810.
Proper motion	0.051″ per year across the sky
Constellation	Eridanus
Right ascension (J2000)	04h 35m 33.0s
Declination (J2000)	−30° 33′ 44″

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