2251+158 (3C 454.3)
Coordinates
= 22:53:57.7479,
= +16:08:53.560
(2000)z = 0.85900
Landessternwarte Heidelberg-Königstuhl
Comparison stars
| star | U | B | V | R | I |
| A | 17.39 (0.05) *a | 16.85 (0.05) *a | 15.86 (0.09) *b | 15.32 (0.09) *b | 14.80 (0.06) *b |
| B | 15.94 (0.02) *a | 15.87 (0.02) *a | 15.21 (0.06) *b | 14.73 (0.05) *b | 14.31 (0.05) *b |
| C | 15.42 (0.02) *a | 15.18 (0.02) *a | 14.43 (0.02) *a | 13.98 (0.02) *c | 13.51 (0.02) *c |
| D | 15.94 (0.02) *a | 14.94 (0.02) *a | 13.85 (0.02) *a | 13.22 (0.01) *c | 12.63 (0.01) *c |
| E | 18.94 (0.14) *a | 17.10 (0.14) *a | 15.76 (0.09) *b | 14.92 (0.08) *b | 14.26 (0.08) *b |
| F | 16.35 (0.11) *a | 16.06 (0.11) *a | 15.21 (0.11) *a | 14.83 (0.03) *d | |
| G | 16.71 (0.08) *a | 16.28 (0.08) *a | 15.42 (0.08) *a | 14.83 (0.02) *d | |
| H | 15.17 (0.02) *a | 14.62 (0.02) *a | 13.65 (0.04) *b | 13.10 (0.04) *b | 12.58 (0.04) *b |
| C1 | 15.67 (0.06) *b | 15.27 (0.06) *b | 14.71 (0.06) *b |
*b: Fiorucci M., Tosti G., Rizzi N., 1998, PASP 110,105
*c: data from Paul S. Smith (private communication)
*d: Raiteri C.M. et al., 1998, A&AS 130, 495
Field of view is 10x10'