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Table 1.
Observing circumstances of the 2I VLT campaign.
| Date | Time (UT) | Instrument set-up | N | ΔT (h) | α (deg) | Δ (au) | Scale (km) |
|---|---|---|---|---|---|---|---|
| 2022-09-26 | 07:51–09:08 | NFM+WFM | 6+4 | −15 | 52.3 | 0.0765 | 55.45 |
| 2022-09-27 | 02:55–08:02 | NFM+WFM | 8+15 | +6 | 53.6 | 0.0754 | 54.72 |
| 2022-09-28 | 03:54–08:17 | NFN+WFM | 6+14 | +31 | 55.2 | 0.0743 | 53.90 |
| 2022-09-29 | 06:10–09:07 | NFM+WFM | 5+5 | +56 | 56.7 | 0.0734 | 53.21 |
| 2022-10-01 | 06:30–09:08 | NFM+WFM | 5+4 | +107 | 59.7 | 0.0720 | 52.21 |
| 2022-10-03 | 07:22–09:09 | WFM | 10 | +153 | 62.7 | 0.0713 | 51.73 |
| 2022-10-04 | 06:19–07:52 | WFM | 8 | +176 | 64.0 | 0.0712 | 51.66 |
| 2022-10-07 | 05:51–09:31 | NFM+WFM | 4+10 | +248 | 67.9 | 0.0719 | 52.12 |
| 2022-10-14 | 05:42–08:50 | WFM | 24 | +416 | 74.2 | 0.0781 | 56.64 |
| 2022-10-19 | 05:31–08:59 | WFM | 25 | +536 | 76.1 | 0.0857 | 62.14 |
| 2022-10-25 | 05:52–08:56 | WFM | 24 | +680 | 76.0 | 0.0969 | 70.30 |
Notes. N represents the number of exposures obtained, ΔT the number of hours between impact and the observations mid-point, α the Sun-comet-Earth phase angle, Δ the geocentric distance, and scale the number of kilometres covered by 1″ at the geocentric distance of the system.
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