Table 1
Details on the observing runs.
| Date UT (Epoch) | Telescope | Band | UT start-end | X | Nobs | texp (s) | Γ | pnr (ppth) |
|---|---|---|---|---|---|---|---|---|
| 2019 Jul. 09 (2180) | OSN150 | Clear | 22:50–03:27 | 1.20 → 1.08 → 1.15 | 667 | 20 | 2.69 | 0.76 |
| 2019 Aug. 24 (2211) | OSN150 | Clear | 21:45–00:07 | 1.09 → 1.08 → 1.34 | 703 | 20 | 2.69 | 0.71 |
| 2019 Oct. 18 (2248) | OSN150 | Clear | 18:38–22:06 | 1.08 → 1.28 | 288 | 40 | 1.42 | 0.82 |
| OSN90 | Clear | 18:50–22:06 | 1.08 → 1.28 | 253 | 40 | 1.31 | 1.49 | |
| 2019 Nov. 30 (2277) | OSN150 | Clear | 18:52–21:56 | 1.23 → 1.91 | 496 | 20 | 2.69 | 0.83 |
| 2020 Jul. 15 (2431) | OSN150 | Clear | 23:59–04:01 | 1.10 → 1.08 → 1.25 | 650 | 20 | 2.69 | 0.64 |
| 2020 Jul. 24 (2437) | ROZ | R | 21:46–01:19 | 1.06 → 1.05 → 1.17 | 493 | 20 | 2.40 | 0.73 |
| OSN150 | Clear | 21:30–01:40 | 1.23 → 1.08 → 1.11 | 613 | 20 | 2.69 | 0.77 | |
| 2020 Jul. 27 (2439) | ROZ | R | 21:11–23:37 | 1.07 → 1.05 → 1.08 | 321 | 20 | 2.39 | 0.87 |
| TRE | Clear | 21:01–01:00 | 1.08 → 1.01 → 1.04 | 108 | 80 | 0.67 | 1.27 | |
| 2020 Sep. 02 (2464) | OSN150 | Clear | 21:53–02:46 | 1.08 → 1.61 | 784 | 20 | 2.69 | 0.80 |
| 2020 Sep. 05 (2466) | OSN150 | Clear | 19:43–01:18 | 1.14 → 1.08 → 1.34 | 816 | 20 | 2.37 | 0.79 |
| 2020 Sep. 08 (2468) | TRE | Clear | 20:01–00:31 | 1.02 → 1.01 → 1.21 | 182 | 80 | 0.67 | 1.31 |
| 2020 Oct. 24 (2499) | OSN150 | Clear | 18:55–23:06 | 1.09 → 1.54 | 546 | 25 | 2.19 | 0.95 |
| 2020 Oct. 27 (2501) | OSN150 | Clear | 18:43–22:02 | 1.09 → 1.37 | 335 | 30 | 1.69 | 0.80 |
Notes. Date UT is given for the beginning of an observing run. Epoch is the transit number from the initial ephemeris given in Mandushev et al. (2011). X tracks the target’s airmass during a run. Nobs is the number of useful scientific exposures. texp is exposure time. Γ is the median number of exposures per minute. pnr is the photometric noise rate (Fulton et al. 2011) in parts per thousand (ppth) of the normalised flux per minute of observation.
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