Vega - AB Magnitude Conversion

Band	λeff	mAB - mVega	MSun(AB)	MSun(Vega)
U	3571	0.79	6.35	5.55
B	4344	-0.09	5.36	5.45
V	5456	0.02	4.80	4.78
R	6442	0.21	4.61	4.41
I	7994	0.45	4.52	4.07
J	12355	0.91	4.56	3.65
H	16458	1.39	4.71	3.32
Ks	21603	1.85	5.14	3.29
u	3546	0.91	6.38	5.47
g	4670	-0.08	5.12	5.20
r	6156	0.16	4.64	4.49
i	7472	0.37	4.53	4.16
z	8917	0.54	4.51	3.97
Y	10305	0.634

These data are mostly from Blanton et al. (2007), taken from the tabulation of Paul Martini

See also this tabulation used by EZgal