Polarimetry and photometry of the peculiar main-belt object 7968 = 133P/Elst-Pizarro

S. Bagnulo; G. P. Tozzi; H. Boehnhardt; J.-B. Vincent; K. Muinonen

doi:10.1051/0004-6361/200913339

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Volume 514 (May 2010)

A&A, 514 (2010) A99

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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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