OJ 287
( PKS 0851+202, S3 0851+20, PG
0851+202, B2 0852+20
1ES 0851+203, RGB J0854+201, 3EG J0853+1941 )
Equat. coord. (J2000.0):
R.A.: 08h 54m 48.9s Dec.: +20° 06' 31''
z = 0.306
Chart field is 15'x15'
GASP suggested stars: 4 10
11
Optical photometry of
comparison stars
(UBV:
|
Star/Band |
U |
B |
V |
R |
I |
|
4 |
15.49 ±0.07 |
15.01 ±0.06 |
14.18 ±0.04 |
13.74 ±0.04 |
13.28 ±0.04 |
|
10 |
15.00 ±0.05 |
15.01 ±0.05 |
14.60 ±0.05 |
14.34 ±0.05 |
14.03 ±0.05 |
|
11 |
15.39 ±0.07 |
15.47 ±0.07 |
14.94 ±0.04 |
14.65 ±0.05 |
14.32 ±0.05 |
|
C1 |
... |
... |
15.88 ±0.07 |
15.50 ±0.07 |
15.08 ±0.07 |
|
C2 |
... |
... |
16.12 ±0.08 |
15.66 ±0.08 |
15.21 ±0.08 |
|
2 |
13.49 ±0.04 |
13.45 ±0.04 |
12.80 ±0.04 |
12.46 ±0.05 |
12.06 ±0.07 |
·
Data
references:
- stars 4, 10, 11, C1, C2 in VRI: Fiorucci M. & Tosti G. 1996, A&AS 116, 403
- stars 4, 10,