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Table 3:

Polarization measurements of 133P/Elst-Pizarro.

Date
UT(1) Exp PA(2) Phase Angle t-t0(3) Filter Ap.(4) \ensuremath {P_Q} \ensuremath {P_U}
yyyy mm dd hh:mm (s) ($^\circ$) ($^\circ$) (days)   pix. (%) (%)
2007 05 22 09:44 960 256.160 19.690 -37.66 R 7.0 $0.96\pm0.59$ $ 0.10\pm 0.59$
2007 05 22 09:17 960 256.162 19.693 -37.68 V 7.0 $ 0.85\pm 0.55$ $ -0.01\pm 0.56$
2007 07 13 07:43 960 247.877 3.331 +14.25 R 5.0 $ -0.75\pm 0.16$ $ -0.39\pm 0.16$
2007 07 13 07:13 960 247.905 3.340 +14.23 V 5.0 $ -1.27\pm 0.15$ $ -0.10\pm 0.16$
2007 07 17 07:05 960 237.251 1.646 +18.22 R 7.0 $ -0.53\pm 0.16$ $ -0.16\pm 0.16$
2007 07 17 06:37 960 237.360 1.654 +18.21 V 5.5 $ -0.53\pm 0.15$ $ -0.04\pm 0.15$
2007 08 01 02:47 960 85.710 4.969 +33.05 R 5.5 $ -1.17\pm 0.31$ $ 0.02\pm 0.29$
2007 08 01 02:19 960 85.720 4.960 +33.03 V 7.0 $ -0.50\pm 0.39$ $ 0.09\pm 0.39$
2007 08 05 04:58 1280 84.169 6.671 +37.14 R 5.0 $ -1.28\pm 0.14$ $ 0.26\pm 0.15$
2007 08 05 04:27 1280 84.174 6.662 +37.12 V 6.0 $ -1.48\pm 0.15$ $ -0.14\pm 0.15$
2007 08 09 01:09 960 83.378 8.215 +40.98 R 5.0 $ -1.22\pm 0.17$ $ 0.12\pm 0.17$
2007 08 09 00:42 960 83.381 8.207 +40.96 V 5.0 $ -1.53\pm 0.18$ $ 0.02\pm 0.18$
2007 08 30 00:43 1280 81.907 15.330 +61.96 R 6.0 $ -0.28\pm 0.46$ $ 0.03\pm 0.48$
2007 08 30 00:13 1280 81.908 15.324 +61.94 V 6.0 $ -0.51\pm 0.29$ $ -0.02\pm 0.30$
2007 09 19 02:16 1200 80.962 19.611 +82.02 R 6.0 $ 0.33\pm 0.37$ $ -0.32\pm 0.36$
2007 09 19 01:48 1200 80.963 19.608 +82.00 V 5.0 $ 0.99\pm 0.39$ $ 0.08\pm 0.37$
2007 09 24 01:01 1280 80.655 20.288 +86.97 R 7.0 $ 1.63\pm 1.13$ $ 0.27\pm 1.17$
2007 09 24 00:28 1280 80.656 20.285 +86.95 V 6.5 $ 1.94\pm 0.90$ $ -0.64\pm 0.88$

Notes.  (1) Date and UT refers to the middle of the exposure series. (2) Position angle of the scattering plane. (3) Time from perihelion. (4) Aperture used for flux extraction, expressed in pixels (1 pixel = 0.25 $^{\prime \prime }$).


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