0109+224 (S2 0109+224)
Coordinates
= 01:12:05.71
= +22:44:39.2
(2000)
Landessternwarte Heidelberg-Königstuhl
Field of view is 15'x15'
Johnson-Cousins photometry of comparison stars
| star | B | V | Rc | Ic |
| I | 13.25 ±0.06 | 12.51 ±0.05 | 12.11 ±0.04 | 11.76 ±0.04 |
| C1 | 16.30 ±0.10 | 15.28 ±0.07 | 14.72 ±0.06 | 14.22 ±0.08 |
| D | 15.19 ±0.06 | 14.45 ±0.05 | 14.09 ±0.05 | ... |
| E | 16.01 ±0.08 | 15.29 ±0.07 | 14.94 ±0.05 | 14.60 ±0.07 |
Photometric
calibrations above made by Perugia and
Torino Astronomical Observatories:
(Ciprini, Tosti, Raiteri, Villata, Ibrahimov, Nucciarelli, & Lanteri 2003,
A&A, 400, 487)
Previous UBV photoelectric calibrations for stars
ABCDEFGHI made by:
Miller, Mullikin & McGimsey 1983,
AJ, 88, 1301.