Table 2
DIM measurement details on 12 November 2014 when Philae was still connected to Rosetta and during the descent to the comet’s surface.
Meas. | Day | Start | Dist. | Meas. | DIM | Margin | Signal-free | False signal | Comments |
numb. | time | time | side | period | frequency | ||||
[UTC] | [km] | [s] | [dB] | [%] | [s-1] | ||||
(1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|
|||||||||
29 | 12.11.2014 | 07:38:02 | 25.3 | 100 | X | 40 | 100 | – | DIM partially obscured by Rosetta |
– | 12.11.2014 | 08:35:00 | 22.4 | – | – | – | – | – | Philae release from Rosetta |
30 | 12.11.2014 | 08:38:32 | 22.2 | 200 | X | 40 | 0 | – | Meas. terminated at 08:38:45 UTC |
31 | 12.11.2014 | 08:42:23 | 22.1 | 200 | Y | 40 | 0 | 83 | |
32 | 12.11.2014 | 08:46:13 | 22.0 | 200 | Z | 40 | 99 | 68 | |
33 | 12.11.2014 | 08:50:03 | 21.8 | 200 | X | 50 | 100 | – | |
34 | 12.11.2014 | 08:53:52 | 21.6 | 200 | Y | 50 | 100 | – | |
35 | 12.11.2014 | 08:57:42 | 21.4 | 200 | Z | 50 | 100 | – | |
36 | 12.11.2014 | 09:59:04 | 18.6 | 200 | X | 40 | 0 | 112 | |
37 | 12.11.2014 | 10:02:54 | 18.4 | 200 | Y | 40 | 99 | 32 | |
38 | 12.11.2014 | 10:06:44 | 18.3 | 200 | Z | 40 | 0 | 77 | |
39 | 12.11.2014 | 14:40:04 | 5.1 | 100 | X | 40 | 96 | 93 | |
40 | 12.11.2014 | 14:42:14 | 5.0 | 100 | Y | 40 | 98 | 47 | Noise terminated at 14:42:26 UTC |
41 | 12.11.2014 | 14:44:24 | 4.9 | 100 | Z | 40 | 0 | 77 | |
– | 12.11.2014 | 15:34:04 | 2.3 | – | – | – | – | – | Philae touchdown at Agilkia |
Notes. Column 1 lists the measurement number, Cols. 2 and 3 give the start time of each measurement block, Col. 4 gives the distance from the barycenter of the comet’s nucleus, Col. 5 lists the measurement time, Col. 6 gives the sensor side operated, Col. 7 lists the margin, Col. 8 lists the fraction of the signal-free time in the measurement period, Col. 9 lists the frequency of false signals, and Col. 10 gives some comments. All measurements were collected in BCT2 mode.
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