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Table 1

Polarimetry and photometry of six Jupiter Trojans asteroids in the special R FORS filter.

Phase
Time Exp angle α P Q N Q P U N U
Date (UT) (s) OBJECT (°) (%) (%) (%) (%) m R R(1,1,α)
2013 04 12 04:40 400 588 9.31 −1.07 ± 0.02 −0.02 0.01 ± 0.02 −0.04 14.92 8.39
2013 04 18 01:16 96 Achilles 10.03 −1.07 ± 0.04 0.00 −0.07 ± 0.04 −0.06 15.00 8.43
2013 05 26 01:33 680 (1906 TG) 11.93 −0.98 ± 0.03 −0.02 −0.01 ± 0.03 0.01 ≤15.59 ≤8.62
2013 04 11 02:26 560 1583 9.15 −1.22 ± 0.02 0.02 −0.01 ± 0.02 −0.01 15.74 8.87
2013 04 18 04:13 480 Antilochus 9.75 −1.23 ± 0.03 −0.01 0.01 ± 0.03 0.02 15.89 8.98
2013 05 13 00:52 400 (1950 SA) 11.07 −1.25 ± 0.03 0.00 0.00 ± 0.03 0.02 15.96 8.90
2013 04 12 03:31 1280 3548 7.35 −1.18 ± 0.03 −0.02 −0.04 ± 0.03 0.03 16.73 9.93
2013 04 18 03:41 1450 Eurybates 8.21 −1.25 ± 0.03 −0.05 −0.04 ± 0.03 0.03 16.78 9.95
2013 04 19 04:31 1420 (1973 SO) 8.35 −1.31 ± 0.03 −0.03 0.02 ± 0.03 −0.04 16.72 9.88
2013 06 01 01:30 1760 11.18 −1.28 ± 0.04 0.00 0.03 ± 0.04 −0.08 ≤17.29 ≤10.16
2013 04 11 03:00 1440 4543 7.32 −0.91 ± 0.03 −0.02 0.00 ± 0.03 −0.02 ≤16.71 ≤9.82
2013 04 19 01:24 1660 Phoinix 8.40 −0.91 ± 0.03 0.02 −0.02 ± 0.03 0.01 16.78 9.85
2013 06 04 01:56 1920 (1989 CQ1) 10.96 −0.97 ± 0.03 −0.02 0.04 ± 0.03 −0.02 17.39 10.14
2013 04 12 04:08 1080 6545 8.79 −1.20 ± 0.03 0.03 0.02 ± 0.03 −0.04 17.24 10.43
2013 04 25 02:58 2400 (1986 TR6) 10.13 −1.04 ± 0.09 0.07 0.11 ± 0.10 −0.01 ≤17.37 ≤10.49
2013 06 05 01:25 2400 11.14 −1.25 ± 0.04 0.07 0.02 ± 0.04 −0.01 17.81 10.64
2013 04 11 03:40 1360 21601 6.83 −1.17 ± 0.03 0.02 −0.02 ± 0.03 −0.01 16.84 10.14
2013 04 19 05:10 1390 (1998 X089) 7.85 −1.18 ± 0.03 0.11 0.01 ± 0.03 −0.06 16.93 10.20
2013 05 26 02:27 1920 11.07 −1.13 ± 0.09 0.10 −0.07 ± 0.09 −0.01 ≤17.67 ≤10.72
2013 06 05 02:20 1920 11.36 −1.19 ± 0.03 −0.05 0.04 ± 0.03 0.05 17.59 10.58

Notes. PQ and PU are the reduced Stokes parameters measured in a reference system such that PQ is the flux perpendicular to the plane Sun-Object-Earth (the scattering plane) minus the flux parallel to that plane, divided by the sum of the two fluxes. Null parameters NQ and NU are expected to be zero within error bars. mR is the observed magnitude in the R filter, and R(1,1,α) is the magnitude as if the object was observed at geocentric and heliocentric distances =1 au at phase angle α. Photometric error bars are estimated a priori = 0.05.

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