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Table 4

Imiging polarimetry of comet C/2019 Y4 (ATLAS).

Date a S-T-O b LP c σLP d
18/04/2020 55.90 12.331 0.018
25/04/2020 62.25 12.488 0.069
27/04/2020 64.25 12.812 0.058
30/04/2020 67.50 14.340 0.069
05/05/2020 73.80 16.901 0.068
12/05/2020 86.20 21.965 0.041
13/05/2020 88.50 22.119 0.060

Notes. aDate of observations, DD/MM/YYYY. bPhase angle (SunTarget-Observer) in degrees. cLinear polarisation in %. d-σ uncertainty of LP in%.

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