1253-055 (3C 279, 4C -05.55, CTA 56)

Coordinates
R.A. = 12:56:11.1665, Dec. = -05:47:21.523 (2000.0)
z = 0.5362



GASP suggested stars: 1 2 3 5

Comparison stars

Star

U

B

V

R

I

1

13.08 (0.06)

13.02 (0.03)

12.42 (0.03)

12.05 (0.02)

11.70 (0.02)

2

14.06 (0.07)

13.73 (0.04)

12.99 (0.04)

12.56 (0.03)

12.17 (0.03)

3

15.51 (0.07)

15.49 (0.03)

14.87 (0.03)

14.53 (0.02)

14.20 (0.08)

4

 

16.53 (0.05)

15.66 (0.03)

15.13 (0.02)

 

5

17.23 (0.16)

16.79 (0.04)

15.98 (0.04)

15.47 (0.02)

15.00 (0.04)

S*

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comparison stars from Raiteri C.M. et al., 1998, A&AS 130, 495
U and I data from Smith P.S. & Balonek T.J., 1998, PASP 110, 1164

* Simona: highly variable star

Field of view is 10'x10'