This is the Right Ascension of the star. The RA is based on a circle
going from 0 to 24, instead of 0 to 360.
This is the declination in degrees. Positive means the star can be viewed
from the northern hemisphere. Negative means southern hemisphere.
Distance is in lightyears. 1 parsec = 3.26 lightyears.
First position: a letter, hottest to coolest: O, B, A, F, G, K, M.
2nd position: a number which is the subclass of the letter, 0 through
9, hottest to coolest. Our sun is a G2V.
3rd position: Roman numeral. I = supergiant, II = medium giant, III
= giant, IV = average, V = normal (but called dwarf), VI = subdwarf.
A0V - 2 classes hotter than our sun, same size.
A7V - 2 classes hotter than our sun, same size as our sun.
B2III - 3 classes hotter than our sun, giant size.
B6IV - 3 classes hotter than our sun, same size.
These are the descriptive names of the constellation or star. Or notes
about the star system.