3C 454.3
(2251+158)

Equat. coord. (J2000.0): R.A.: 22h 53m 57.7s  Dec.:  +16° 08' 54''

z = 0.859


MAPCAT suggested stars: 5 6 7 8

Important note:

Both for polarimetry and for photometry, please use MIDAS aperture parametes: 11pix, 0pix, and 2pix when the SITe CCD is used. This is the optimum way we have found to avoid flux from the target's nearby star.

 

 

Optical photometry of comparison stars

Star \ Band

U

B

V

R

I

1

15.17 (~0.02)

14.70 (0.02)

13.71 (0.02)

13.15 (0.02)

12.545 (0.006)

2

15.94 (~0.02)

14.93 (0.02)

13.80 (0.02)

13.19 (0.02)

12.633 (0.005)

3

15.42 (~0.02)

15.19 (0.02)

14.44 (0.02)

14.00 (0.02)

13.528 (0.004)

4

15.94 (~0.02)

15.91 (0.05)

15.21 (0.02)

14.79 (0.02)

14.300 (0.007)

5

16.71 (~0.08)

16.28 (0.05)

15.30 (0.02)

14.83 (0.02)

14.334 (0.025)

6

16.35 (~0.11)

16.06 (0.05)

15.34 (0.02)

14.83 (0.03)

14.424 (0.017)

7

18.94 (~0.14)

17.00 (0.03)

15.74 (0.02)

14.94 (0.02)

14.204 (0.007)

8

17.39 (~0.05)

16.85 (0.06)

15.94 (0.02)

15.34 (0.02)

14.754 (0.020)

References
Raiteri et al. 1998, A&AS 130, 495   (adopted in BVR)
González-Pérez et al. 2001, AJ 122, 2055   (adopted in I)
Angione 1971, AJ 76, 412   (adopted in U)