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Table 1

Log of photometric observations in R and I broadband filters.

Date UT Telescope & instrument Filter rh (AU) Δ (AU) α (°)

2010 Feb. 9 03:56-04:46 NOT ALFOSC Bessel R 1.604 0.891 33.2
2010 Feb. 9 04:09-04:44 NOT ALFOSC interference i 1.604 0.891 33.2
2010 Mar. 10 03:55-04:03 IAC-80 CAMELOT Bessel R 1.605 0.729 24.9
2010 Mar. 10 04:03-04:11 IAC-80 CAMELOT Bessel I 1.605 0.729 24.9
2010 Mar. 22 00:08-00:15 IAC-80 CAMELOT Bessel R 1.621 0.691 19.5
2010 Mar. 22 00:17-00:24 IAC-80 CAMELOT Bessel I 1.621 0.691 19.5
2010 Apr. 22 23:21-23:50 IAC-80 TCP Bessel R 1.702 0.700 4.5
2010 Apr. 22 23:52-23:59 IAC-80 TCP Bessel I 1.702 0.700 4.5
2010 May 3 00:16-00:26 IAC-80 CAMELOT Bessel R 1.737 0.742 7.9
2010 May 3 00:27-00:37 IAC-80 CAMELOT Bessel I 1.738 0.742 7.9
2010 May 10 00:42-00:52 IAC-80 CAMELOT Bessel R 1.765 0.782 11.3
2010 May 10 00:53-01:03 IAC-80 CAMELOT Bessel I 1.765 0.782 11.3
2010 Jun. 15 21:54-22:07 IAC-80 CAMELOT Bessel R 1.935 1.127 24.1
2010 Jun. 15 22:08-22:21 IAC-80 CAMELOT Bessel I 1.935 1.127 24.1
2010 Jun. 16 21:46-21:59 IAC-80 CAMELOT Bessel R 1.940 1.139 24.3
2010 Jun. 16 22:00-22:13 IAC-80 CAMELOT Bessel I 1.940 1.139 24.3
2010 Jul. 3 21:52-22:05 IAC-80 CAMELOT Bessel I 2.030 1.362 26.6
2010 Jul. 3 22:06-22:19 IAC-80 CAMELOT Bessel R 2.030 1.362 26.6
2010 Aug. 4 21:10-21:30 IAC-80 CAMELOT Bessel R 2.210 1.852 27.1
2010 Aug. 4 21:31-21:51 IAC-80 CAMELOT Bessel I 2.210 1.852 27.1
2010 Sep. 9 20:02-20:27 IAC-80 CAMELOT Bessel R 2.420 2.465 23.8
2010 Sep. 9 20:29-20:49 IAC-80 CAMELOT Bessel I 2.420 2.465 23.8

Notes. rh and Δ are the heliocentric and geocentric distances of the comet during the observations, respectively; α is the phase angle Sun-target-observer.

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