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Table 1
Observational details of the observed asteroids.
| Asteroid | Date | UT | Texp | Seeing | Airmass | mV | α | Δ | r | Solar | sample |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (s) | (″) | (°) | (au) | (au) | analogs | ||||||
| 61674 | 12/04/2017 | 22:16 | 3 × 300 | 1.4 | 1.15 | 18.1 | 15.5 | 1.74 | 2.56 | 1,3 | a |
| 66648 | 10/04/2017 | 01:16 | 3 × 600 | 1.8 | 1.13 | 19.8 | 6.0 | 2.32 | 2.28 | 2,1 | a |
| 20094 | 10/04/2017 | 05:14 | 3 × 600 | 1.8 | 1.20 | 19.7 | 14.4 | 2.50 | 3.21 | 2,1 | a |
| 222080 | 10/04/2017 | 03:02 | 9 × 300 | 1.7 | 1.20 | 20.1 | 3.4 | 2.30 | 2.29 | 2,1 | a |
| 17/04/2017 | 02:17 | 3 × 900 | 0.8 | 1.20 | 20.1 | 3.2 | 2.29 | 3.28 | 2,1 | ||
| 261489 | 17/04/2017 | 01:06 | 3 × 900 | 0.8 | 1.40 | 21.1 | 15.3 | 2.63 | 3.27 | 2,1 | a |
| 5994 | 10/04/2017 | 00:15 | 3 × 300 | 1.8 | 1.20 | 18.0 | 15.0 | 2.95 | 3.50 | 2,1 | b |
| 23000 | 10/04/2017 | 02:00 | 3 × 300 | 2.3 | 1.07 | 18.1 | 7.6 | 2.02 | 2.97 | 2,1 | b |
| 198403 | 10/04/2017 | 04:16 | 3 × 300 | 1.8 | 1.24 | 20.3 | 20.5 | 2.25 | 3.18 | 2,1 | b |
| 04:32 | 4 × 450 | 1.8 | 1.30 | ||||||||
| 6671 | 12/04/2017 | 21:23 | 3 × 300 | 1.5 | 1.14 | 18.5 | 18.0 | 2.86 | 3.19 | 1,3 | c |
| 22540 | 12/04/2017 | 21:51 | 3 × 300 | 1.4 | 1.05 | 19.1 | 19.1 | 2.21 | 2.78 | 1,3 | c |
| 20095 | 17/04/2017 | 02:52 | 3 × 300 | 1.1 | 1.50 | 19.0 | 5.0 | 2.08 | 3.06 | 2,1 | c |
| 121281 | 17/04/2017 | 01:25 | 3 × 600 | 1.1 | 1.40 | 19.6 | 6.2 | 2.01 | 2.98 | 2,1 | c |
| 38466 | 17/04/2017 | 03:21 | 3 × 300 | 1.4 | 1.60 | 19.0 | 10.5 | 1.90 | 2.81 | 2,1 | c |
| 155547 | 17/04/2017 | 02:07 | 3 × 600 | 1.1 | 1.30 | 19.9 | 1.7 | 2.25 | 3.25 | 2,1 | c |
Notes. The solar analog stars used are 1:SA102-1081, 2:SA107-998, and 3:SAM67-1194. The last column refers to the subsamples identified in this work from the general list of potential Ceres family members in Carruba et al. (2016).
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