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Table 1

Observing log.

Date Obs. time Observatory r Δ α λ β V Mov Exp Fltr Code
(UTC) (UTC) (see Table 2) (au) (au) [mag] ″/min [s]
2021-03-02 02:56–03:36 Lowell (1) 0.9959 0.0078 51.6 114.6 −25.0 16.4 25 10 VR LC01
2021-03-02 11:55–15:11 DOAO (2) 0.9956 0.0068 48.4 116.7 −19.9 16.0 35 10 I LC02
2021-03-02 18:46–19:35 Schiap. (3) 0.9955 0.0062 46.2 118.2 −16.2 15.7 43 5 C LC03
2021-03-03 01:58–02:22 Lowell (1) 0.9953 0.0055 43.2 120.3 −10.7 15.4 55 4 VR LC05
2021-03-03 09:01–09:59 Winer (5) 0.9951 0.0049 39.9 122.9 −03.4 15.0 69 5 C LC06
2021-03-03 20:00−21:49 Mayaki (6) 0.9948 0.0041 36.5 128.6 +12.2 14.5 98 3 C LC07
2021-03-04 01:07–02:07 Platanus (10) 0.9946 0.0039 37.0 131.6 +19.9 14.4 112 1(*) C C005
2021-03-04 02:00–02:12 McDonald (7) 0.9946 0.0039 37.1 131.9 +20.6 14.4 112 5 w LC08
2021-03-04 19:22–20:26 DOAO (2) 0.9942 0.0041 52.4 150.8 +51.3 15.0 98 5 I LC09
2021-03-05 02:08–02:21 CalarAlto (8) 0.9940 0.0044 59.0 161.0 +59.1 15.3 88 2.5 C LC10
2021-03-05 03:30–03:59 Lowell (1) 0.9940 0.0045 60.5 164.0 +60.8 15.5 84 4 VR A001
2021-03-05 06:00–06:44 Lowell (1) 0.9939 0.0047 63.1 169.6 +63.3 15.8 77 4 VR A008
2021-03-05 06:45–06:51 Lowell (1) 0.9939 0.0047 63.5 170.4 +63.6 15.8 76 4 g CI01
2021-03-05 06:52–06:58 Lowell (1) 0.9939 0.0047 63.6 170.6 +63.7 15.8 76 4 i CI02
2021-03-05 06:59–07:05 Lowell (1) 0.9939 0.0047 63.7 170.8 +63.8 15.8 76 4 z CI03
2021-03-05 11:40–12.17 Winer (5) 0.9938 0.0052 68.0 182.4 +67.1 15.9 59 5 C A016
2021-03-06 00:37–02:32 Shefford (9) 0.9935 0.0064 76.7 214.1 +70.3 16.7 38 4 C LC12
2021-03-06 08:34–10:46 Winer (5) 0.9934 0.0073 80.1 227.8 +69.7 17.1 28 5 C B579
2021-03-07 08:45–08:52 McDonald (7) 0.9929 0.0100 86.6 250.1 +66.2 18.2 17 4 w LC13

Notes. The table presents the subset of the observing log limited to the lightcurves which were used in the analysis. The third col. shows the shortened observatory name (full names are presented in Table 2). The next five cols. present the aspect data for the middle of the observing time: r and Δ are the distances of the asteroid from the Sun and the Earth, respectively, α is the solar phase angle, while λ and β are the geocentric, ecliptic (J2000) longitude and latitude. In the next col., an average brightness V of the asteroid, as predicted by the Horizons ephemeris, is given. Starting from the tenth col., the table gives the asteroid movement on the sky (Mov), the exposure time (Exp), and the filter used in the observations (here ‘C’ stands for a ‘clear’ filter). The last col. provides the code to locate the lightcurve in Fig. 2. (*)For the C005 lightcurve more than 2000 exposures were obtained, with a very short exposure time of 1 s. They were then averaged (five points into one), which gave a satisfactory result.

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