Here are two dozen MK types for anticenter OB stars observed by Jim Christy at USNO-Flagstaff. The radial velocities from this paper seem to have made it into compilations, but the spectral types are overlooked. At dispersion of only 105A/mm, it might have been better to ignore the velocities! He identified them by BD number, but I think all have HD numbers. He suggests his types are on average a bit later and more luminous than the Morgan/Hiltner types for the same stars. Christy, better known to the world as the discoverer of Pluto's moon, Charon, is retired here in Flagstaff, and shows up regularly for colloquia on Mars Hill. ------------------------------------------------------------------------------- Coordinates and identifications for anticenter OB stars version: 13 Dec 2003 source: 1977ApJ...217..127C CHRISTY J.W. Astrophys. J., 217, 127-133 (1977) The radial velocities of early-type stars within six degrees of the galactic anticenter direction. ---all coords from Tycho-2 Name RA (J2000) Dec s V MK remarks BD+30 873 5 24 28.36 +30 11 30.9 T 9.4 B1V BD+29 886 5 25 17.83 +29 36 53.6 T 8.9 B1Ve BD+33 1056 5 28 09.58 +33 18 47.3 T 10.6 B0IV BD+23 942 5 33 33.60 +23 20 32.2 T 8.8 B0.5III BD+27 797 5 34 36.63 +27 35 33.6 T 9.9 B1IIIe BD+21 899 5 35 40.53 +21 24 11.7 T 7.6 O7 BD+21 901 5 36 23.01 +21 11 11.5 T 8.9 B2IIIpne BD+34 1150 5 43 06.38 +34 20 55.1 T 9.5 B2IVe BD+30 992 5 44 05.16 +30 56 01.8 T 8.1 B3III NErn of 3" pair BD+27 850 5 44 27.72 +27 13 47.7 T 9.4 B2IV NWrn of 4" pair BD+35 1223 5 45 05.49 +35 09 47.4 T 8.2 B0.5III BD+34 1162 5 45 12.28 +34 05 45.6 T 8.9 B3IIIn BD+26 943 5 45 44.50 +26 33 37.0 T 9.6 B2V BD+36 1261 5 48 29.65 +36 12 41.4 T 9.1 B2III BD+28 902 5 48 41.34 +28 19 28.5 T 8.4 B2IV BD+25 989 5 48 28.64 +25 06 48.6 T 9.7 B1Vn BD+29 1005 5 48 53.65 +29 08 10.0 T 8.2 B3V BD+32 1111 5 51 54.78 +32 14 23.1 T 8.8 B3III BD+27 909 5 55 19.59 +27 54 53.7 T 9.5 B2III BD+30 1055 5 55 36.65 +30 42 41.0 T 8.4 B2III BD+30 1071 5 58 35.32 +30 12 25.9 T 9.0 B3IIIe BD+25 1065 5 59 53.56 +25 05 19.0 T 9.1 B2:V:pne BD+31 1174 6 03 06.43 +31 03 08.2 T 8.9 O9V BD+28 1001 6 04 58.66 +28 46 00.8 T 9.1 B0IV