In the constellation Pisces, what is the hottest star called and the largest star?

Spectral classification can quickly tell you about the stars in this constellation.

You first need a catalog, see source link for one example of Pisces.

The hottest stars are the O followed by the B stars. When there are multiple O or B stars, look to the next number. They are in 10ths, 1/10, 2/10, 3/10, etc. The lowest number means the hottest star. No O stars in Pisces, so we look to the B stars, and 53 Psc is a spectral type B2.5IV star. This was the closest to the B0 side, making it the hottest in surface temp. Its surface temperatures of about 15000K.



The largest star will be a blue super giant, or a red giant:

Morgan-Keenan system is the luminosity class expressed by the Roman numbers I, II, III, IV and V, expressing the width of certain absorption lines in the star's spectrum. It has been shown that this feature is a general measure of the size of the star, and thus of the total luminosity output from the star.

Class I are generally called supergiants

Class II brightgiants

Class III simply giants

Class IV subgiants,

Class V either dwarfs or more properly main sequence stars

Class VI are Subdwarfs

Class VII are Whitedwarfs



Hipparchus 117887 is a spectral type M5IIb, b means it is less luminous, but still large in diameter.

22 Psc is a spectral type K4II

Hipparchus 1421 is a spectral type K0II

58 Psc is a spectral type G8II

Hipparchus 4382 is a spectral type G8II

19 Psc is a spectral type C5II, C is a carbon star, but again the II lets us know that it has a large diameter.



One of these is your largest star. If you said most massive, you would have a different answer.In the constellation Pisces, what is the hottest star called and the largest star?see this link



The blue-white or white stars are the hottest

http://users.snip.net/~darkon/pisces/mai鈥?/a>



http://www.rasnz.org.nz/Stars/Pisces.htm