Table 1
A chronological list of optical light curves of asteroid (85990) 1999 JV6 used in this study.
ID | UT Date | Rh | Δ | α | λO | βO | Total | Ampl. | Filter | Obs. | Ref. | LC-only | LC+radar |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
[yyyy-mm-dd] | [AU] | [AU] | [°] | [°] | [°] | [h] | [mag] | facility | model | model | |||
1 | 2007-03-02 | 1.310 | 0.367 | 24.2 | 192.9 | 13.5 | 6.3 | 1.43 | r | INT | • | ||
2 | 2007-03-03 | 1.312 | 0.364 | 23.2 | 192.3 | 13.7 | 6.0 | 1.44 | r | INT | |||
3 | 2007-03-04 | 1.312 | 0.361 | 22.3 | 191.7 | 14.0 | 5.4 | 1.40 | r | INT | |||
4 | 2007-03-06 | 1.314 | 0.356 | 20.4 | 190.4 | 14.5 | 6.4 | 1.05 | r | INT | • | ||
5 | 2008-02-15 | 1.280 | 0.389 | 34.1 | 193.1 | 9.8 | 2.7 | 1.02 | r | INT | |||
6 | 2008-02-17 | 1.284 | 0.382 | 32.3 | 192.4 | 10.3 | 3.2 | 0.96 | r | INT | |||
7 | 2008-02-18 | 1.286 | 0.378 | 31.4 | 192.0 | 10.6 | 5.1 | 1.38 | r | INT | • | ||
8 | 2013-02-04 | 1.189 | 0.214 | 16.8 | 155.0 | 7.2 | 2.4 | 0.97 | V | NTT | • | ||
9 | 2013-02-04 | 1.189 | 0.214 | 16.6 | 155.0 | 7.2 | 2.0 | 0.81 | V | NTT | • | ||
10 | 2014-01-28 | 1.142 | 0.166 | 16.6 | 147.7 | 3.9 | 4.4 | 1.00 | Clear | PDS | 1 | • | |
11 | 2014-01-28 | 1.142 | 0.166 | 16.3 | 147.7 | 3.9 | 3.3 | 0.95 | Clear | PDS | 1 | • | |
12 | 2014-01-29 | 1.147 | 0.169 | 14.6 | 146.3 | 4.3 | 5.3 | 0.94 | Clear | PDS | 1 | • | |
13 | 2014-01-29 | 1.147 | 0.169 | 14.3 | 146.3 | 4.3 | 2.6 | 0.97 | Clear | PDS | 1 | • | |
14 | 2014-02-01 | 1.159 | 0.177 | 9.3 | 142.4 | 5.4 | 5.7 | 0.97 | Clear | PDS | 1 | • | |
15 | 2014-02-02 | 1.163 | 0.180 | 8.0 | 141.2 | 5.8 | 5.4 | 0.93 | Clear | PDS | 1 | • | |
16 | 2014-02-02 | 1.163 | 0.180 | 7.8 | 141.2 | 5.8 | 3.9 | 0.87 | Clear | PDS | 1 | • | |
17 | 2015-01-16 | 1.067 | 0.096 | 27.8 | 146.6 | −6.8 | 3.5 | 0.96 | Clear | PDS | 2 | • | |
18 | 2015-01-16 | 1.067 | 0.096 | 27.4 | 146.6 | −6.8 | 3.0 | 0.97 | Clear | PDS | 2 | • | |
19 | 2015-01-17 | 1.072 | 0.099 | 24.7 | 144.3 | −5.8 | 3.4 | 0.98 | Clear | PDS | 2 | • | • |
20 | 2015-01-17 | 1.072 | 0.099 | 24.3 | 144.3 | −5.8 | 3.2 | 0.96 | Clear | PDS | 2 | • | • |
21 | 2015-01-18 | 1.076 | 0.101 | 21.7 | 142.2 | −4.9 | 3.9 | 0.87 | Clear | PDS | 2 | • | • |
22 | 2015-01-18 | 1.076 | 0.101 | 21.3 | 142.2 | −4.9 | 2.1 | 0.75 | Clear | PDS | 2 | • | |
23 | 2015-01-23 | 1.100 | 0.118 | 8.3 | 133.0 | −0.8 | 7.0 | 0.96 | R | TMO | • | • | |
24 | 2015-01-24 | 1.105 | 0.122 | 6.1 | 131.4 | −0.2 | 7.2 | 0.91 | R | TMO | |||
25 | 2015-01-25 | 1.110 | 0.126 | 4.0 | 130.0 | 0.5 | 7.0 | 0.84 | R | TMO | |||
26 | 2016-02-03 | 1.131 | 0.170 | 29.8 | 99.8 | 2.6 | 5.9 | 1.17 | V | INT | • | • | |
27 | 2016-02-04 | 1.135 | 0.176 | 30.4 | 99.8 | 3.0 | 6.8 | 1.25 | V | INT | • | • | |
28 | 2016-02-06 | 1.143 | 0.189 | 31.7 | 100.0 | 3.6 | 5.4 | 1.12 | V | INT | • |
Notes. For each light curve anumerical “ID” is listed, then the Universal Time (UT) “Date” at the beginning of the night is given as well as the heliocentric (Rh) and geocentric (Δ) distances measured in AU, the solar phase angle (α), the observer centred ecliptic longitude (λO), the observer centred ecliptic latitude (βO), “Total” length of the light curve, the apparent peak-to-peak “Amplitude”, and the “Observing facility” used to obtain the light curve. Where applicable a “Reference” to the already published work is given. Each line represents a single light curve (sometimes a few segments were observed on a single night). Circles in the “LC-only model” and “LC+radar model” columns indicate which light curves were selected for the light-curve-only and combined light curve and radar shape modelling, respectively, see Sects. 2.1 and 3. A subset of light curves used for the development of the “LC-only model” was selected for the rotational phase and observing geometry coverage, and S/N. For the “LC+radar model” we used only a few of the light curves closest to the radar observing dates. All of the light-curve data available were used for measuring phase offsets in the final stage of the spin-state analysis discussed in Sect. 4. Observing facility key (with MPC site code): (INT, 950), 2.5 m Isaac Newton Telescope, La Palma, Spain; (NTT, 809), European Southern Observatory 3.5 m New Technology Telescope, Chile; (PDS, U82), Palmer Divide Station, California, USA; (TMO, 673), Table Mountain Observatory, California, USA.
References. (1) Warner (2014); (2) Warner (2015).
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