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Table 1

Optical photometry data sets used in this study.

ID Date Rh Δ α λO βO Telescope Total Filter Ref.
(UT) (AU) (AU) (°) (°) (°) (h)
           
1 05/09/1989 1.193 0.319 48.5 309.8 −12.4 MtL 4.1 V 1
08/09/1989 MtL 1.9 V 1
2 07/10/1989 1.078 0.145 54.3 313.0 −2.9 S90 3.7 V 1
08/10/1989 S90 3.7 V 1
3 06/10/1989 1.080 0.147 54.0 312.5 −3.1 Kh 3.7 V 2
4 11/10/1989 1.071 0.143 56.0 315.2 0.7 ESO1 1.9 V 3
12/10/1989 ESO1 0.5 V 3
5 31/05/1995 2.474 1.568 13.2 243.9 −6.4 ESOD 4.0 R 4
01/06/1995 ESOD 5.3 R 4
6 02/08/2008 1.215 0.574 56.3 33.5 −12.9 SAS 1.7 R 5
7 05/08/2008 1.199 0.553 57.4 36.9 −12.3 SAS 2.0 R 5
8 07/08/2008 1.189 0.539 58.2 39.2 −11.8 SAS 3.1 R 5

9 04/04/2010 3.233 2.246 3.0 202.4 −4.1 NTT 2.0 R
10 06/04/2010 3.233 2.242 2.7 201.9 −3.0 NTT 3.0 R
11 28/06/2011 1.815 0.981 25.2 285.3 −12.6 TMO 3.0 R
12 29/06/2011 1.808 0.974 25.3 284.9 −12.4 TMO 2.0 R
13 28/08/2011 1.401 0.731 44.3 266.2 −4.3 NTT 0.8 R
14 31/08/2011 1.382 0.723 45.1 266.6 −4.5 TMO 3.0 R
15 01/09/2011 1.375 0.721 45.5 266.8 −4.5 TMO 3.0 R
16 01/09/2011 1.375 0.721 45.8 266.8 −4.3 NTT 1.2 R
17 19/10/2011 1.120 0.609 62.4 289.9 −3.1 TMO 2.3 R
18 20/10/2011 1.116 0.608 62.7 290.7 −3.0 TMO 2.8 R
19 03/11/2011 1.079 0.592 65.7 301.8 −0.8 NTT 2.5 R
20 02/12/2011 1.079 0.621 64.5 329.7 4.7 NTT 2.5 R
21 03/12/2011 1.081 0.624 64.2 330.8 4.8 NTT 3.0 R
22 02/01/2012 1.190 0.751 55.5 5.5 9.9 ESO22 4.0 V
23 07/01/2012 1.215 0.780 53.8 11.5 10.7 ESO22 1.0 V
24 13/01/2012 1.248 0.819 51.9 18.7 11.7 ESO22 1.0 V
25 21/01/2012 1.295 0.876 49.4 27.9 13.1 ESO22 1.0 V
26 24/02/2012 1.517 1.193 40.4 61.9 19.4 NTT 1.8 R
27 26/02/2012 1.531 1.216 40.0 63.6 19.8 NTT 1.7 R
28 05/02/2013 3.113 2.605 16.9 204.2 −22.0 NTT 1.1 V
06/02/2013 NTT 2.9 V
29 15/04/2013 3.208 2.229 5.2 190.4 7.5 NTT 2.0 V
30 03/05/2013 3.221 2.357 11.2 186.3 15.9 PAL 3.0 R

Notes. For each light curve, labelled as ID 1–30, the date of the beginning of the observing night is given as well as the heliocentric (Rh) and geocentric (Δ) distances measured in AU, the solar phase angle (α), and the observed ecliptic longitude (λO), and latitude (βO) of the target. In some cases (light curves 1, 2, 4, 5, and 28) a single light curve has been composed of segments gathered over a few nights. The designation of instrument used is listed in the “Telescope” column. For each light curve segment a total time span of the light curve in hours, and imaging filter used are listed in columns “Total” and “Filter”, respectively. Where applicable, a reference to the already published work is given in the “Ref.” column. Telescope key (with MPC site code): (MtL, I52) NASA-UA Mt. Lemmon 60 in, Arizona, USA; (S90, 695), Steward Observatory 90 in Bok Telescope, Arizona, USA; (Kh, 121), Kharkiv Astronomical Observatory 0.7 m Telescope, Ukraine; (ESO1, 809), European Southern Observatory (ESO) 1 m Telescope, La Silla, Chile; (ESOD, 809), Danish 1.54 m Telescope, La Silla, Chile; (SAS, A12), Stazione Astronomica di Sozzago 0.4 m Telescope, Italy; (NTT, 809), European Southern Observatory 3.5 m New Technology Telescope, Chile; (TMO, 673), Table Mountain Observatory, California, USA; (ESO22, 809), ESO/Max Planck Institute 2.2 m Telescope, La Silla, Chile; (PAL, 675), Palomar Observatory 5 m Hale Telescope, California, USA.

References.(1) Wisniewski et al. (1997); (2) Velichko et al. (1989); (3) Hoffmann et al. (1993); (4) Erikson et al. (2000); (5) Beherend & Manzini (priv. comm.).

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