Open Access
Table 3
Photometrical parameters of comet C/203 X1 (PANSTARRS) including apparent magnitudes in R filter, colors, color slope, and A f ρ values obtained within an aperture size of ~17 000 km.
| Date | R | B − V | V − R | S′ B − R | A f ρ B | A f ρ V | A f ρ R |
|---|---|---|---|---|---|---|---|
| 2015-12-05 | 12.19 ± 0.01 | 0.839 ± 0.027 | 0.475 ± 0.017 | 12.58 ± 1.21 | 953 ± 22 | 1156 ± 10 | 1250 ± 16 |
| 2015-12-06 | 12.24 ± 0.01 | 0.733 ± 0.022 | 0.463 ± 0.021 | 7.56 ± 0.85 | 1005 ± 14 | 1105 ± 16 | 1182 ± 14 |
| 2015-12-07 | 12.25 ± 0.01 | 0.820 ± 0.020 | 0.450 ± 0.019 | 10.72 ± 0.81 | 923 ± 12 | 1099 ± 14 | 1161 ± 14 |
| 2015-12-08 | 12.27 ± 0.02 | 0.760 ± 0.039 | 0.502 ± 0.031 | 10.38 ± 1.41 | 907 ± 24 | 1023 ± 24 | 1134 ± 17 |
| 2015-12-10 | 12.26 ± 0.01 | 0.714 ± 0.025 | 0.432 ± 0.017 | 5.42 ± 0.86 | 1005 ± 17 | 1085 ± 16 | 1129 ± 6 |
| 2015-12-12 | 12.32 ± 0.01 | 0.746 ± 0.025 | 0.420 ± 0.019 | 6.28 ± 0.81 | 924 ± 15 | 1029 ± 17 | 1058 ± 18 |
| 2015-12-16 | 12.47 ± 0.03 | 0.736 ± 0.030 | 0.395 ± 0.037 | 4.78 ± 1.60 | 918 ± 18 | 1012 ± 20 | 1017 ± 28 |
| 2015-12-19 | 12.47 ± 0.01 | N/A | 0.445 ± 0.018 | N/A | N/A | 956 ± 11 | 1006 ± 13 |
| 2015-12-23 | 12.58 ± 0.01 | 0.730 ± 0.036 | 0.459 ± 0.019 | 7.26 ± 1.45 | 825 ± 24 | 844 ± 12 | 899 ± 9 |
| 2015-12-29 | 12.58 ± 0.01 | 0.769 ± 0.023 | 0.442 ± 0.021 | 8.20 ± 0.74 | 747 ± 10 | 849 ± 14 | 890 ± 8 |
| 2015-12-30 | 12.61 ± 0.01 | 0.758 ± 0.014 | 0.482 ± 0.013 | 9.44 ± 0.63 | 707 ± 7 | 795 ± 7 | 865 ± 8 |
| 2015-12-31 | 12.58 ± 0.02 | 0.698 ± 0.034 | 0.454 ± 0.027 | 5.68 ± 1.51 | 780 ± 21 | 831 ± 14 | 881 ± 16 |
| 2016-01-01 | 12.20 ± 0.01 | 0.633 ± 0.021 | 0.410 ± 0.017 | 0.99 ± 0.84 | 1220 ± 18 | 1224 ± 14 | 1247 ± 13 |
| 2016-01-02 | 11.70 ± 0.01 | 0.541 ± 0.025 | 0.342 ± 0.021 | −5.89 ± 0.85 | 2558 ± 40 | 2356 ± 38 | 2255 ± 22 |
| 2016-01-07 | 11.97 ± 0.02 | 0.701 ± 0.027 | 0.447 ± 0.022 | 5.51 ± 1.17 | 1537 ± 31 | 1641 ± 22 | 1730 ± 26 |
| 2016-01-08 | 12.10 ± 0.02 | 0.657 ± 0.029 | 0.417 ± 0.034 | 2.32 ± 1.18 | 1452 ± 20 | 1488 ± 34 | 1526 ± 32 |
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