Star Info Page 3

Table of Main-Sequence Star Data

spectral class	example star	temperature K	luminosity	mass	radius
O9.5	Orionis C	33,000	30,000	18.0	5.90
B0	Becrux	30,000	16,000	16.0	5.70
B2	Spica	22,000	8,300	10.5	5.10
B5	Achernar	15,000	750	5.40	3.70
B8	Rigel	12,500	130	3.50	2.70
A0	Sirius A	9,500	63	2.60	2.30
A2	Fomalhaut	9,000	40	2.20	2.00
A5	Altair	8,700	24	1.90	1.80
F0	.	7,400	9.0	1.60	1.50
F2	.	7,100	6.3	1.50	1.30
F5	Procyon A	6,400	4.0	1.35	1.20
G0	Alpha Centauri A .	5,900	1.45	1.08	1.05
G2	The Sun	5,800	1.00	1.00	1.00
G5	Mu Cassiopeiae	5,600	0.70	0.95	0.91
G8	Tau Ceti	5,300	0.44	0.85	0.87
K0	Pollux	5,100	0.36	0.83	0.83
K2	Epsilon Eridani	4,830	0.28	0.78	0.79
K5	Alpha Centauri B	4,370	0.18	0.68	0.74
M0	.	3,670	0.075	0.47	0.63
M2	Lalande 21185	3,400	0.03	0.33	0.36
M4	Ross 128	3,200	0.0005	0.20	0.21
M6	Wolf 359	3,000	0.0002	0.10	0.12

Not all of the stars fall into the main sequence. Other types include white dwarfs, long-period variables, and supergiants.
Some lines of this table have been omitted to make it fit on one printed page.
Temperatures are in degrees Kelvin.
Luminosity, mass, and radius are all relative to those of the Sun.