Open Access
Table 1
Observation log.
| Date | Δ (au)(a) | rh (au)(b) | f(deg)(c) | α (deg)(d) | Filter × N | Exp(s)(e) |
|---|---|---|---|---|---|---|
| 2018-11-06 | 0.45 | 1.394 | 3.09 | 22.2 | R × 5 | 50 |
| 2018-11-09 | 0.455 | 1.395 | 4.6 | 22.6 | R × 5 | 50 |
| 2018-11-10 | 0.456 | 1.395 | 4.6 | 22.7 | R × 5 | 50 |
| 2018-11-11 | 0.458 | 1.396 | 5.72 | 22.8 | R × 5 | 30 |
| 2018-11-12 | 0.46 | 1.397 | 6.65 | 22.9 | R × 5 | 30 |
| 2018-11-13 | 0.462 | 1.398 | 7.47 | 23.1 | R × 5 | 20 |
| 2018-11-14 | 0.464 | 1.399 | 8.2 | 23.2 | R × 5 | 30 |
| 2018-11-16 | 0.469 | 1.401 | 9.5 | 23.4 | R × 5 | 30 |
| 2018-11-17 | 0.471 | 1.403 | 10.64 | 23.5 | R × 5 | 30 |
| 2018-11-18 | 0.474 | 1.404 | 11.17 | 23.7 | R × 5 | 30 |
| 2018-11-19 | 0.477 | 1.406 | 12.15 | 23.8 | R × 5 | 30 |
| 2018-11-23 | 0.49 | 1.413 | 15.08 | 24.3 | B × 20, R × 20, V × 20 | 30 |
| 2018-11-24 | 0.493 | 1.415 | 15.82 | 24.4 | B × 10, R × 10, V × 10 | 30 |
| 2018-11-25 | 0.497 | 1.417 | 16.52 | 24.5 | B × 10, R × 10, V × 10 | 30 |
| 2018-12-04 | 0.536 | 1.441 | 23.29 | 25.7 | R × 10 | 30 |
| 2018-12-13 | 0.588 | 1.472 | 29.71 | 26.9 | R × 10 | 30 |
| 2018-12-21 | 0.644 | 1.505 | 35.15 | 27.9 | B × 10, V × 10 | 30 |
| 2018-12-25 | 0.676 | 1.523 | 37.74 | 28.5 | R × 10 | 30 |
| 2018-12-26 | 0.684 | 1.528 | 38.43 | 28.6 | B × 20, R × 20, V × 20 | 30 |
| 2019-01-01 | 0.738 | 1.558 | 42.24 | 29.3 | B × 15, R × 15, V × 15 | 50 |
| 2019-01-03 | 0.757 | 1.569 | 43.54 | 29.5 | B × 5, R × 5, V × 5 | 50 |
| 2019-01-04 | 0.766 | 1.574 | 44.11 | 29.6 | B × 10, R × 10, V × 10 | 30 |
| 2019-01-10 | 0.828 | 1.607 | 47.67 | 30.1 | R × 10 | 50 |
| 2019-01-11 | 0.839 | 1.613 | 48.28 | 30.2 | B × 10, R × 10, V × 10 | 50 |
| 2019-01-12 | 0.85 | 1.619 | 48.88 | 30.3 | R × 10 | 50 |
| 2019-01-13 | 0.861 | 1.625 | 49.47 | 30.4 | R × 10 | 50 |
| 2019-01-14 | 0.873 | 1.631 | 50.05 | 30.5 | B × 10, R × 10, V × 10 | 50 |
| 2019-01-15 | 0.884 | 1.637 | 50.62 | 30.5 | B × 10, R × 10, V × 10 | 50 |
| 2019-01-23 | 0.981 | 1.686 | 54.99 | 31 | R × 10 | 50 |
| 2019-01-25 | 1.006 | 1.699 | 56.07 | 31 | B × 10, R × 10, V × 10 | 50 |
| 2019-02-02 | 1.113 | 1.751 | 60.11 | 31.2 | B × 10, R × 10, V × 10 | 50 |
| 2019-02-03 | 1.127 | 1.758 | 60.62 | 31.2 | B × 10, R × 10, V × 10 | 50 |
| 2019-02-04 | 1.141 | 1.765 | 61.12 | 31.2 | B × 10, R × 10, V × 10 | 50 |
| 2019-02-05 | 1.155 | 1.771 | 61.55 | 31.2 | B × 15, R × 15, V × 15 | 50 |
| 2019-02-06 | 1.169 | 1.778 | 62.05 | 31.2 | B × 15, R × 15, V × 15 | 50 |
| 2019-02-07 | 1.184 | 1.785 | 62.54 | 31.2 | B × 15, R × 15, V × 15 | 50 |
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