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Table 5

Radar-derived disc-integrated properties for the cw spectra of (85990) 1999 JV6.

UT Date UT Time λB βB φ Radar x-sect. Proj. area Radar OC Radar SC SC/OC
[hh:mm:ss] [hh:mm:ss] [°] [°] [°] [×105 m2] [×105 m2] albedo albedo ratio
2015-01-14 06:11:55 63 −12 27 0.310 1.91 0.162 0.064 0.394 ± 0.015
                   
2015-01-15 05:58:29 196 −11 254 0.161 1.24 0.130 0.043 0.327 ± 0.007
                   
2015-01-16 06:33:03 285 −10 165 0.340 2.01 0.169 0.035 0.208 ± 0.003
                   
2015-01-17 07:15:03 7 −9 83 0.131 1.12 0.117 0.036 0.311 ± 0.010
                   
2015-01-18 07:05:53 136 −9 314 0.230 1.64 0.140 0.044 0.313 ± 0.006
                   
2015-01-28 04:36:37 32 −2 58 0.191 1.44 0.133 0.043 0.322 ± 0.014
                   
2016-01-14 03:12:35 236 −24 214 0.288 1.89 0.152 0.059 0.387 ± 0.002
                   
2016-01-15 02:55:30 11 −21 79 0.166 1.32 0.125 0.052 0.415 ± 0.005
                   
2016-01-17 02:26:48 275 −16 175 0.351 2.05 0.171 0.070 0.409 ± 0.003
                   
2016-01-17 03:37:00 210 −16 240 0.201 1.51 0.133 0.053 0.396 ± 0.003
                   
2016-01-18 03:43:18 323 −14 127 0.223 1.57 0.142 0.063 0.442 ± 0.005
                   
2016-01-19 02:15:07 163 −13 287 0.152 1.27 0.120 0.048 0.400 ± 0.007
                   
2017-01-14 23:53:17 311 −16 139 0.271 1.76 0.154 0.051 0.332 ± 0.004
                   
2017-01-15 23:38:26 80 −15 10 0.343 2.03 0.169 0.052 0.307 ± 0.003
                   
Mean values: 0.14 ± 0.02 0.05 ± 0.01 0.37 ± 0.05

Notes. UT Date and UT Time is the universal-time date and time mid-receive. The body-fixed longitude, λB, and latitude, βB, of the radar line-of-sight, and rotationphase, φ, were determined using the spin-state for the best-fit radar shape model (see Table 3). The rotation phase is measured in degrees as an offset of X-axis relative to its position at T0. The radar cross-sections (“radar x-sect.” column) were calculated from the OC power spectra. The “Projected areas” and “Radar OC albedos” were derived using the best-fit 3D shape. The “Radar SC albedos” were calculated from the OC albedos and the SC/OC ratio. The “SC/OC ratio” for each spectrum is also given. In the last row we list the means and standard deviations of OC albedo, SC albedo and SC/OC ratio, the latter two excluding anomalous value measured on 16 January 2015.

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