Table 1
Parameters of the selected impacts.
Impact | Time | Sun x,y | I171 | Column | Mass | V (ballist.) | V (triang.) | B+ | B − |
(UT) | (arcsec) | (104 DN s-1) | (1018 cm-2) | (1012 g) | (km s-1) | (km s-1) | (G) | (G) | |
|
|||||||||
11 | 07:03:05 | 820, 30 | 77 | 3.6±0.2 | 232 | 145 | 6 | 5 | |
2 | 07:03:53 | 630, –195 | 16 | 5.2±0.5 | 235 | 140−180 | 5 | 6 | |
3 | 07:03:53 | 720, –100 | 13 | 7.7±0.6 | 3−4 | 235 | 165 | 3 | 3 |
4 | 07:10:41 | 650, 30 | 6.8 | 5.0±0.5 | 1−2 | 265 | 150−200 | 5 | 4 |
5 | 07:12:17 | 600, –20 | 11 | 3.0±0.5 | 275 | 5 | 4 | ||
6 | 07:16:17 | 735, 175 | 4.8 | 3.2±0.1 | 290 | 6 | 6 | ||
7 | 07:17:29 | 735, 145 | 2.8 | 3.0±0.1 | 290 | 4 | 6 | ||
8 | 07:21:05 | 485, –100 | 5.9 | 3.6±0.3 | 305 | 5 | 7 | ||
9 | 07:23:29 | 620, 245 | 89 | 6.6±0.4 | 2−3 | 310 | 250 | 6 | 30 |
10 | 07:26:17 | 415, –75 | 5.0 | 3.0±0.4 | 315 | 5 | 4 | ||
112 | 07:28:17 | 520, –80 | 21 | 2.6±0.3 | 320 | 6 | 6 | ||
12 | 08:07:53 | 405, –75 | 66 | 3.7±0.1 | 400 | 300 | 6 | 5 | |
131 | 08:08:41 | 390, –65 | 220 | 3.7±0.1 | 2−3 | 405 | 300 | 6 | 5 |
14 | 08:50:48 | 300, 40 | 31 | 3.9±0.2 | 2−3 | 445 | 380 | 4 | 4 |
15 | 08:51:31 | 315, 120 | 49 | <1.5 | 445 | 380 | 3 | 7 | |
16 | 08:51:55 | 415, 65 | 10 | 2.2±0.2 | 450 | 380 | 3 | 3 |
Notes. I171 are the peak impact 171 Å channel intensities. The column densities are an estimate of the neutral hydrogen component 2−4 min before impact. The mass was computed by integrating the column densities in the falling plasma. The ballistic velocity assumes an ejection time from the surface 06:25:30 UT. The triangulation velocity is the velocity about 5 min before impact. The magnetic field strengths, B+ and B −, are the average positive and negative field in the region around the impact. Marked impacts have been analysed by
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