The magnitudes in this list have been revised following 1990/91 UKT9 photometry. Asterisks refer to the most frequently re-observed stars. The results define the UKIRT/UKT9 natural photometric system. The K zeropoint is defined as identical to that of the CIT (Elias) system for A0 stars. Transformations to CIT are given in the appendix.
NAME Sp RA (1950) DEC J H K L L' M
*HD 225023 A0 0 0 11.8 35 32 14.0 7.082 6.993 6.962 6.94 6.96 7.03
*G158-27 M5 0 4 12.0 -7 47 54.0 8.378 7.781 7.447 7.04
*BS 33 F7V 0 8 43.2 -15 44 32.0 3.964 3.689 3.636 3.60 3.60
*HD 1160 A0 0 13 23.1 3 58 24.0 7.060 7.051 7.040 7.05 7.04
HD 2811 A2 0 28 53.0 -43 52 58.0 7.178 7.093 7.067 7.04
HD 3029 A3 0 31 2.3 20 9 30.0 7.263 7.125 7.093 7.06
BS 337 M0III 1 6 55.5 35 21 22.0 -0.908-1.703-1.853 -2.00 -1.98 -1.75
BS 696 B2Iae 2 21 43.1 56 23 4.0 5.587 5.499 5.443 5.37 5.33 5.31
*BS 718 B9III 2 25 29.8 8 14 13.0 4.374 4.390 4.390 4.40 4.41 4.38
BS 739 gG3 2 29 36.6 -1 15 17.0 3.748 3.218 3.121 3.04
BS 740 F4IV 2 29 43.0 -15 27 48.0 3.879 3.623 3.585 3.56 3.56
*GL 105.5 M0 2 38 7.6 0 58 57.0 7.305 6.663 6.539 6.47 6.46
BS 816 gF0 2 42 43.4 4 30 8.0 5.502 5.384 5.353 5.38
HD 18881 A0 3 0 20.5 38 12 53.0 7.130 7.135 7.140 7.15 7.14 7.29
HD 19904 A2 3 8 49.1 -39 14 24.0 6.727 6.662 6.642 6.62
G77-31 M4? 3 10 40.5 4 35 12.0 8.816 8.187 7.857 7.52
*HD 22686 A0 3 36 18.7 2 36 7.0 7.196 7.190 7.185 7.20 7.19
BS 1140 B7IV 3 41 49.5 24 8 1.0 5.520 5.500 5.510 5.60 5.64 5.64
BS 1457 K5III 4 33 2.9 16 24 37.0 -1.848-2.614-2.783 -2.97 -2.89 -2.76
BS 1543 F6V 4 47 7.4 6 52 32.0 2.353 2.117 2.095 2.07
BS 1552 B2III 4 48 32.4 5 31 16.0 4.029 4.087 4.138 4.18 4.18 4.15
BS 1641 B7V 5 3 0.2 41 10 8.0 3.518 3.646 3.677 3.71 3.74 3.77
BS 1637 F0V 5 6 40.6 51 35 52.0 4.312 4.204 4.153 4.11 4.14 4.13
BS 1713 B8Iae 5 12 8.0 -8 15 29.0 0.240 0.241 0.211 0.13 0.09 0.09
BS 1708 G4III 5 12 59.5 45 56 58.0 -1.334-1.717-1.802 -1.87 -1.85 -1.79
SAO112626 F8 5 16 41.4 1 39 15.0 8.934 8.670 8.596 8.65
BS 1869 dF0 5 36 15.9 47 42 56.0 5.532 5.454 5.393 5.36 5.39 5.37
HD 38921 A0 5 45 41.0 -38 14 51.0 7.572 7.551 7.536 7.53
*HD 40335 A0 5 55 37.6 1 51 9.0 6.555 6.473 6.452 6.43 6.43 6.41
BS 2228 F0V 6 17 34.6 46 25 57.0 6.012 5.943 5.892 5.84 5.88 5.85
*HD 44612 A0 6 21 9.7 43 34 35.0 7.075 7.041 7.041 7.04 7.03
BS 2491 A1V 6 42 56.7 -16 38 46.0 -1.300-1.319-1.320 -1.35 -1.36 -1.38
*BD+0 1694 ? 6 52 7.3 0 0 52.0 5.750 4.857 4.606 4.43 4.43
BS 2721 G0V 7 12 7.6 47 19 51.0 4.475 4.180 4.126 4.08
BS 2943 F5IV 7 36 41.1 5 21 16.0 -0.437-0.564-0.646 -0.66 -0.66
BS 2990 K0IIIb 7 42 15.6 28 8 55.0 -0.523-0.975-1.050 -1.15 -1.17 -1.09
BS 3314 A0V 8 23 9.7 -3 44 31.0 3.920 3.919 3.940 3.94 3.92
HD 75223 A0 8 45 29.8 -39 36 54.0 7.329 7.296 7.281 7.26
*HD 77281 A2 8 59 5.4 -1 16 45.0 7.111 7.052 7.031 7.00 7.06 6.97
*GL 347A M3.5 9 26 25.0 -7 8 30.0 8.483 7.881 7.658 7.41 7.36
*HD 84800 A2 9 45 35.9 43 53 56.0 7.592 7.549 7.538 7.55 7.54 7.58
BS 3888 F2IV 9 47 27.1 59 16 30.0 3.162 3.005 2.983 2.98 2.94 2.94
NAME Sp RA (1950) DEC J H K L L' M
BS 3903 G7III 9 49 4.3 -14 36 40.0 2.617 2.136 2.050 1.98
V 569 M3 10 9 46.3 -3 29 41.0 5.992 5.310 5.106 4.93 4.89
BS 4069 M0III 10 19 21.5 41 45 6.0 0.132-0.654-0.803 -0.94 -0.96 -0.63
GL 390 M1.5 10 22 44.0 -9 58 36.0 6.939 6.275 6.061 5.87
GL 406 M6 10 54 6.0 7 19 12.0 7.143 6.469 6.099 5.69
BS 4358 K3III 11 11 25.9 8 20 5.0 3.879 3.299 3.202 3.14
HD101452 A2 11 37 45.1 -38 52 9.0 7.018 6.890 6.848 6.81
Y 2730 dM4.5 11 45 8.2 1 5 56.0 6.532 5.935 5.646 5.34 5.26
BS 4550 G8V 11 50 6.2 38 4 39.0 4.957 4.466 4.400 4.35 4.38 4.41
HD105601 A2 12 6 56.1 38 54 39.0 6.821 6.719 6.687 6.64 6.65 6.66
*HD106965 A2 12 15 24.0 1 51 10.0 7.380 7.337 7.316 7.30 7.34 7.30
*BS 4689 A2IV 12 17 20.8 0 23 21.0 3.810 3.781 3.781 3.79 3.79 3.78
BS 4935 F7V 13 1 5.1 -20 18 55.0 4.604 4.290 4.266
BS 4983 G0V 13 9 32.5 28 7 52.0 3.194 2.929 2.886 2.88 2.89 2.88
BS 5340 K1IIb 14 13 22.8 19 26 31.0 -2.200-2.878-2.976 -3.09 -3.05 -2.91
*BS 5447 F2V 14 32 30.2 29 57 41.0 3.723 3.522 3.489 3.48 3.49 3.47
HD129653 A2 14 40 38.2 36 58 7.0 6.985 6.942 6.921 6.91 6.93 7.07
*HD129655 A2 14 41 11.0 -2 17 38.0 6.826 6.724 6.692 6.67 6.68
HD130163 A0 14 44 36.2 -39 43 4.0 6.856 6.846 6.835 6.81
BD+3 2954 M0 14 52 23.2 3 11 33.0 5.926 5.026 4.825 4.64
BS 5685 B8V 15 14 18.7 -9 11 59.0 2.759 2.789 2.799 2.85 2.88
*HD136754 A0 15 19 24.3 24 31 19.0 7.155 7.146 7.135 7.14 7.14
*BD+2 2957 K2 15 22 29.0 1 41 6.0 5.280 4.454 4.263 4.08 4.19
BS 6084 B2II+O9V 16 18 8.7 -25 28 29.0 2.491 2.442 2.421 2.43 2.42 2.42
*BS 6092 A9III 16 18 14.1 46 25 54.0 4.192 4.257 4.298 4.35 4.38
S-R 3 ? 16 23 7.7 -24 27 26.0 7.804 7.001 6.543 6.25
OPH S1 ? 16 23 32.8 -24 16 44.0 9.007 7.344 6.378 5.71
BS 6136 K4III 16 26 0.9 0 46 32.0 2.898 2.184 2.036 1.86
BS 6147 G8IIIa 16 28 16.4 -16 30 19.0 2.767 2.334 2.269 2.19 2.22 2.28
BS 6406 M5Ib 17 12 22.0 14 26 45.0 -2.276-3.110-3.351 -3.70 -3.66 -3.44
HD161743 A0 17 45 31.8 -38 6 11.0 7.620 7.620 7.615 7.61
*HD161903 A2 17 45 43.3 -1 47 34.0 7.172 7.059 7.023 6.99 7.01 7.14
*HD162208 A0 17 46 20.7 39 59 40.0 7.223 7.141 7.112 7.09 7.14 7.12
BS 6707 F2II 17 56 35.3 30 11 32.0 3.470 3.252 3.210 3.16 3.18 3.17
*Y 4338 dM4.5e 18 46 44.1 -23 53 32.0 6.297 5.680 5.416 5.12 5.03
BS 7120 K3II 18 52 5.8 -22 44 8.0 2.739 2.120 2.033 1.91
*GL 748 dM4 19 9 38.0 2 48 36.0 7.105 6.557 6.319 6.05 6.00
BS 7615 K0III 19 54 25.7 34 56 58.0 2.199 1.716 1.640 1.51 1.56 1.65
*BS 7773 B9.5V 20 17 53.5 -12 55 4.0 4.825 4.859 4.859 4.86 4.86
*GL 811.1 dM4 20 54 4.0 -10 37 36.0 7.832 7.185 6.946 6.70 6.69 6.68
*HD201941 A2 21 10 13.6 2 26 12.0 6.696 6.657 6.626 6.60 6.61
BS 8143 B9Iab 21 15 27.0 39 11 4.0 3.886 3.838 3.797 3.73 3.73 3.69
*HD203856 A0 21 21 37.1 39 48 12.0 6.926 6.887 6.861 6.84 6.84
HD205772 A3 21 35 33.6 -41 16 26.0 7.775 7.688 7.657 7.64
SAO34401 F0 22 21 47.7 54 57 12.0 7.933 7.766 7.734 7.74
*BS 8541 B9Iab 22 22 29.0 49 13 21.0 4.305 4.267 4.235 4.23 4.22 4.22
BS 8551 K0III 22 25 19.6 4 26 39.0 2.956 2.378 2.312 2.25 2.24 2.32
*Y 5546 dM5 22 50 36.2 -14 31 34.0 5.980 5.344 5.066 4.80 4.74
Appendix
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TRANSFORMATION RULES FROM UKIRT (UKT9) TO CIT (Caltech)
The CIT system is taken as that defined by Elias et al (1982, A.J.
87,1029). The UKIRT system is that defined by the UKIRT standards list,
observed by UKT9.
Transformation equations are
Kcit = Kukirt - 0.018*(J-K)
( J-K )cit = 0.936 * ( J-K )ukirt
( H-K )cit = 0.960 * ( H-K )ukirt
( J-H )cit = 0.920 * ( J-H )ukirt
( K-L )cit = 0.820 * ( K-L )ukirt
Although IRCAM has a different filter set to that of UKT9, no
significant systematic differences have been found between IRCAM photometry
and the UKIRT system out to a J-K colour of ~ 1 (Longmore, Priv. Comm). So
IRCAM can be considered to be on the UKIRT system for this colour range.