Table 1
Details of the ground-based transit observations presented in this work.
| Date of first obs. | Instrument | Start and end times (UT) | Nobs | Texp (s) | Tobs (s) | Filter | Airmass | Moon illum. | Aperture sizes (px) | Npoly | Scatter (mmag) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2015/01/26 | GROND | 03:52 → 08:59 | 117 | 90 | 157 | g′ | 1.90→1.00→ 1.02 | 40% | 23,80,100 | 1 | 1.07 |
| 2015/01/26 | GROND | 03:52 → 08:59 | 117 | 90 | 157 | r′ | 1.90→1.00→ 1.02 | 40% | 25,80,100 | 1 | 0.73 |
| 2015/01/26 | GROND | 03:52 → 08:59 | 117 | 90 | 157 | i′ | 1.90→1.00→ 1.02 | 40% | 23,80,100 | 1 | 1.03 |
| 2015/01/26 | GROND | 03:52 → 08:59 | 117 | 90 | 157 | z′ | 1.90→1.00→ 1.02 | 40% | 23,80,100 | 1 | 1.12 |
| 2015/01/30 | GROND | 03:54 → 06:42 | 76 | 85 | 106 | g′ | 1.60→1.05 | 80% | 20,80,100 | 1 | 0.88 |
| 2015/01/30 | GROND | 03:54 → 06:42 | 73 | 85 | 106 | r′ | 1.60→1.05 | 80% | 23,80,100 | 1 | 0.60 |
| 2015/01/30 | GROND | 03:54 → 06:42 | 72 | 85 | 106 | i′ | 1.60→1.05 | 80% | 23,80,100 | 1 | 1.01 |
| 2015/01/30 | GROND | 03:54 → 06:42 | 75 | 85 | 106 | z′ | 1.60→1.05 | 80% | 23,80,100 | 1 | 0.81 |
| 2016/04/16 | DFOSC | 23:33 → 03:59 | 149 | 100 | 112 | R | 1.08→1.05→1.32 | 77% | 15,30,50 | 1 | 0.96 |
| 2017/05/30 | DFOSC | 22:49 → 03:03 | 137 | 100 | 113 | R | 1.02→1.02→2.47 | 34% | 15,33,50 | 2 | 0.88 |
| 2017/07/11 | DFOSC | 22:54 → 02:28 | 103 | 100 | 125 | R | 1.49→1.63 | 92% | 17,35,55 | 2 | 1.21 |
| 2018/05/17 | DFOSC | 00:02 → 04:38 | 109 | 100 | 112 | I | 1.02→1.08→1.63 | 9% | 9,17,40 | 2 | 1.13 |
| 2018/06/05 | DFOSC | 23:15 → 03:38 | 123 | 100 | 122 | R | 1.07→1.10→4.94 | 57% | 15,33,53 | 2 | 1.38 |
| 2018/06/24 | DFOSC | 22:47 → 02:43 | 127 | 100 | 112 | R | 1.17→1.22 | 90% | 17,35,57 | 3 | 1.29 |
| 2019/05/19 | DFOSC | 23:16 → 03:59 | 122 | 100 | 111 | I | 1.01→1.02→2.72 | 98% | 10,24,40 | 4 | 2.80 |
| 2019/05/23 | DFOSC | 01:18 → 05:19 | 112 | 100 | 115 | I | 1.25→1.32 | 74% | 14,32,45 | 2 | 1.23 |
| 2019/06/07 | DFOSC | 23:00 → 02:57 | 121 | 100 | 116 | I | 1.06→1.09→3.10 | 25% | 13,33,55 | 3 | 1.12 |
| 2021/05/26 | DFOSC | 23:46 → 04:09 | 134 | 100 | 116 | I | 1.06→1.09→4.35 | 99% | 13,34,52 | 3 | 1.03 |
| 2022/05/23 | DFOSC | 03:00 → 06:00 | 73 | 100 | 129 | I | 1.01→1.57→2.00 | 94% | 18,40,60 | 2 | 1.42 |
Notes. Nobs is the number of observations, Texp is the exposure time, Tobs is the observational cadence, and ‘Moon illum.’ is the geocentric fractional illumination of the Moon at midnight. The aperture sizes are the radii of the software apertures for the star, inner sky and outer sky, respectively. Scatter is the rms scatter of the data versus a fitted model.
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