Table 1 Observing log and polarimetric measurements of comet 2I/Borisov.
From: Unusual polarimetric properties for interstellar comet 2I/Borisov
DATE | UT | \({t}_{\exp }\) | FILTER | r | Δ | α | Pr = Q/I | U/I | Notes |
---|---|---|---|---|---|---|---|---|---|
(s) | (a.u.) | (a.u.) | (∘) | (%) | (%) | ||||
2019-12-25 | 08:02 | 880 | VF | 2.04 | 1.94 | 28.48 | 3.35 ± 0.07 | −0.01 ± 0.07 | – |
2019-12-25 | 08:24 | 480 | RF | – | – | – | 3.76 ± 0.08 | 0.17 ± 0.08 | – |
2019-12-25 | 08:39 | 360 | IF | – | – | – | 4.14 ± 0.14 | −0.03 ± 0.14 | – |
2020-01-08 | 08:05 | 1280 | VF | 2.12 | 1.95 | 27.56 | 2.59 ± 0.06 | 0.14 ± 0.06 | – |
2020-01-08 | 08:34 | 720 | RF | – | – | – | 3.32 ± 0.18 | 0.20 ± 0.10 | a |
2020-02-06 | 08:17 | 1280 | IF | 2.40 | 2.12 | 24.14 | 1.37 ± 0.28 | −0.88 ± 0.32 | b |
2020-02-06 | 08:46 | 1440 | RF | – | – | – | 1.19 ± 0.21 | 0.03 ± 0.21 | b |
2020-02-17 | 04:12 | 1280 | IF | 2.54 | 2.21 | 22.63 | 1.14 ± 0.18 | 0.11 ± 0.18 | – |
2020-02-17 | 04:24 | 1440 | RF | – | – | – | 0.53 ± 0.19 | −0.08 ± 0.14 | – |
2020-03-20 | 03:14 | 1120 | VF | 3.02 | 2.53 | 18.06 | −1.05 ± 0.15 | 0.09 ± 0.16 | – |
2020-03-20 | 03:41 | 1440 | RF | – | – | – | −0.82 ± 0.13 | 0.25 ± 0.10 | – |