Table 2.
Ground-based observations of NEB waves
| Observer | Date1 | Sys III. Longitude (°) | Graphic Latitude (°) | Filter | Related features | λ (°) |
|---|---|---|---|---|---|---|
| P. Miles | 2017–02-22 | 209–234 | 15.9 ± 1.1 | IR700nm | --- | --- |
| D. Peach | 2017–02-26 (b) | 71–153 | 18.2 ± 1.1 | Visible | A | 1.7 ± 0.3 |
| P. Miles | 2017–03-05 | 100–116 | 17.8 ± 1.1 | IR700nm | --- | 1.5 ± 0.3 |
| D. Peach | 2017–03-07 (b) | 77–142 | 18.0 ± 1.1 | Visible | C, S | 1.9 ± 0.4 |
| A. Garbellini | 2017–03-12 (b) | 2–12 | 16.8 ± 1.2 | Visible | A, S | 1.6 ± 0.3 |
| C. Go | 2017–03-24 (b) | 7–57 | 17.0 ± 1.0 | Visible | A, C | 1.1 ± 0.2 |
| T. Olivetti | 2017–03-31 (c) | 23–57 | 17.2 ± 1.1 | Visible | A, S | 1.7 ± 0.4 |
| R. Bossman | 2017–04-08 | 60–67 | 15.7 ± 1.0 | Visible | A | 1.6 ± 0.4 |
| C. Go | 2017–04-10 (c) | 25–30 | 16.0 ± 0.5 | Visible | A, C, S | 1.5 ± 0.4 |
| M. Kardasis | 2017–04-15 (d) | 312–350 | 17.1 ± 0.9 | Visible | A, S | 1.4 ± 0.3 |
| C. Go | 2017–04-17 (d) | 318–351 | 16.7 ± 0.9 | Visible | A, C, S | 1.4 ± 0.5 |
| C. Go | 2017–04-19 (d) | 282–322 | 17.7 ± 0.4 | Visible | A, C, S | 1.4 ± 0.3 |
| T. Olivetti | 2017–04-21 (d) | 303–338 | 17.5 ± 0.6 | Visible | A, S | 1.6 ± 0.4 |
| C. Go | 2017–04-24 (d) | 302–325 | 17.5 ± 0.6 | Visible | C, S | 1.3 ± 0.4 |
| C. Go | 2017–04-26 (e) | 212–259 | 17.7 ± 0.7 | Visible | A, C, S | 2.2 ± 0.5 |
| A. Wesley | 2017–04-29 (d) | 281–294 | 17.9 ± 0.4 | Visible | A, S | 2.1 ± 0.4 |
| C. Go | 2017–05-01 | 244–275 | 17.3 ± 0.4 | Visible | A | 1.5 ± 0.5 |
| A. Wesley | 2017–05-03 (e) | 205–212 | 18.8 ± 1.1 | IR685nm | --- | --- |
| A. Wesley | 2017–05-05 (f) | 89–118 | 17.0 ± 1.7 | Visible | C, S | 2.0 ± 0.4 |
| C. Go | 2017–05-10 (e) | 199–213 | 17.0 ± 0.6 | Visible | A, S | 2.1 ± 0.4 |
| C. Go | 2017–05-18 (e) | 227–263 | 16.8 ± 0.4 | Visible | A, S | 1.9 ± 0.5 |
| Pic-Net | 2017–06-10 (f) | 62–285 | 17.3 ± 0.9 | Visible | A | 1.2 ± 0.1 |
| C. Zanelli | 2017–06-13 (f) | 90–113 | 17.0 ± 0.6 | Visible | A, S | --- |
Notes:
1.
Letters (b) to (f) indicate systems that are identified in different dates.
2.
Related features are as in Table 1. Appendix Figure A2 shows maps of the NEB on these images displaying the wave activity. The longitudinal range contains the extremes of the different wave systems that can be seen on different dates. In some cases, the images show fragmented waves that do not necessarily extend all the way between both limits.