Poor Person's Attempt at Tabulating Useful Numbers
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Sp Type Te(K) B-V V-R
O6-O8V 38000 -0.33 -0.18
O9V 33200 -0.31 -0.17
O9.5V 31450 -0.31 -0.17
B0V 29700 -0.30 -0.16
B1V 25600 -0.28 -0.15
B2V 22300 -0.25 -0.13
B3V 19000 -0.22 -0.12
B4V 17200 -0.20 -0.10
B5V 15400 -0.18 -0.09
B6V 14100 -0.16 -0.08
B7V 13000 -0.14 -0.07
B8V 11800 -0.11 -0.05
B9V 10700 -0.09 -0.04
A0V 9480 -0.05 -0.02
A2V 8810 +0.02 +0.02
A5V 8160 +0.14 +0.09
A7V 7930 +0.19 +0.12
F0V 7020 +0.38 +0.23
F2V 6750 +0.44 +0.26
F5V 6530 +0.50 +0.29
F7V 6240 +0.57 +0.33
G0V 5930 +0.65 +0.38
G2V 5830 +0.68 +0.40
G4V 5740 +0.70 +0.41
G6V 5620 +0.74 +0.43
K0V 5240 +0.85 +0.49
K2V 5010 +0.92 +0.53
K4V 4560 +1.07 +0.62
K5V 4340 +1.15 +0.67
K7V 4040 +1.27 +0.73
M0V 3800 +1.36 +0.79
M1V 3680 +1.41 +0.81
M2V 3530 +1.48 +0.85
M3V 3380 +1.55 +0.89
M4V 3180 +1.65 +0.95
M5V 3030 +1.73 +1.00
M6V 2850 +1.82 +1.05