Table 1: Observational conditions for 2867 Steins. The exposure time (exp) is the same for each of the four images obtained at the four different $\lambda /2$ retarder plate positions, while nset represents the number of repetitions of the full polarimetric sequences. Data on the position angle of the scattering plane ($\phi $), on the phase angle ($\alpha $), on the heliocentric (r) and geocentric ($\Delta $) distances of Steins have been taken from the JPL ephemeris service (http://ssd.jpl.nasa.gov/cgi-bin/eph).
DATE UT Fil. exp (s) nset mv airm $\phi $ ($^{\circ}$) $\alpha $ ($^{\circ}$) r (AU) $\Delta $ (AU) seeing ('')
11 Jun. 05 08:50 R 33 3 16.45 1.05 252.6 28.3 2.0201 1.4315 1.45
11 Jun. 05 09:08 V 35 3 16.45 1.02 252.6 28.3 2.0201 1.4315 1.35
01 Jul. 05 09:23 R 26 3 16.06 1.02 258.2 24.3 2.0197 1.2563 0.55
01 Jul. 05 09:40 V 26 3 16.06 1.03 258.2 24.3 2.0197 1.2563 0.54
14 Jul. 05 05:43 R 15 3 15.78 1.17 265.0 20.6 2.0217 1.1653 0.80
14 Jul. 05 05:58 V 15 4 15.78 1.12 265.0 20.6 2.0217 1.1653 0.99
06 Aug. 05 04:16 R 15 3 15.31 1.13 294.1 12.3 2.0295 1.0654 0.60
06 Aug. 05 04:31 V 15 4 15.31 1.10 294.2 12.3 2.0295 1.0654 0.55
09 Aug. 05 07:56 R 10 4 15.26 1.09 301.7 11.3 2.0310 1.0594 0.74
09 Aug. 05 08:14 V 10 4 15.26 1.12 301.7 11.3 2.0310 1.0594 0.71
13 Aug. 05 07:49 R 10 4 15.22 1.10 313.2 10.3 2.0330 1.0547 2.10
13 Aug. 05 08:16 V 10 4 15.22 1.16 313.2 10.3 2.0330 1.0547 1.94


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