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Table 1

MIRI imaging mode observations of asteroid (10920) 1998 BC1 taken as part of a filter characterization calibration program.

No. ID(a) Date-BEG…END(b) Filter(c) Texp (s)(d)
01 2101 10:21:08.7…10:21:30.4 F560W 21.632
02 2101 10:24:25.1…10:24:46.8 F560W 21.632
03 2101 10:27:45.9…10:28:07.5 F560W 21.632
04 2101 10:31:05.8…10:31:27.4 F560W 21.632
05 2103 10:36:05.2…10:36:13.8 F770W 8.653
06 2103 10:39:09.5…10:39:18.1 F770W 8.653
07 2103 10:42:13.8…10:42:22.4 F770W 8.653
08 2103 10:45:14.7…10:45:23.3 F770W 8.653
09 2105 10:50:42.6…10:50:51.2 F1000W 8.653
10 2105 10:53:46.0…10:53:54.7 F1000W 8.653
11 2105 10:56:45.2…10:56:53.8 F1000W 8.653
12 2105 10:59:46.0…10:59:54.7 F1000W 8.653
13 2107 11:04:14.2…11:04:22.9 F1130W 8.653
14 2107 11:07:17.7…11:07:26.3 F1130W 8.653
15 2107 11:10:24.6…11:10:33.3 F1130W 8.653
16 2107 11:13:26.3…11:13:35.0 F1130W 8.653
17 2109 11:17:52.0…11:18:00.6 F1280W 8.653
18 2109 11:20:55.4…11:21:04.0 F1280W 8.653
19 2109 11:24:00.5…11:24:09.2 F1280W 8.653
20 2109 11:27:04.9…11:27:13.5 F1280W 8.653
21 210B 11:31:38.3…11:31:47.0 F1500W 8.653
22 210B 11:34:43.5…11:34:52.1 F1500W 8.653
23 210B 11:37:47.8…11:37:56.5 F1500W 8.653
24 210B 11:40:51.2…11:40:59.9 F1500W 8.653
25(e) 210D 11:45:16.9…11:45:25.5 F1800W 8.653
26 210D 11:48:18.6…11:48:27.2 F1800W 8.653
27 210D 11:51:26.4…11:51:35.0 F1800W 8.653
28 210D 11:54:31.5…11:54:40.2 F1800W 8.653
29(f) 210F 11:58:54.6…11:59:03.3 F2100W 8.653
30 210F 12:01:58.0…12:02:06.7 F2100W 8.653
31(f) 210F 12:05:01.5…12:05:10.1 F2100W 8.653
32(f) 210F 12:08:01.4…12:08:10.1 F2100W 8.653
33(f) 210H 12:13:11.3…12:13:19.9 F2550W 8.653
34(f) 210H 12:16:21.6…12:16:30.3 F2550W 8.653
35(f) 210H 12:19:31.1…12:19:39.8 F2550W 8.653
36(f) 210H 12:22:35.4…12:22:44.1 F2550W 8.653

Notes. The calibration proposal ID is 1522. All measurements also include a faint moving source, while the prime target asteroid was in some cases not in the FOV. (a) The official JWST IDs (all starting with V01522002001P000000000). (b) The UT start and end times (all taken on 2022 July 14). (c) The MIRI filter band. (d) The exposure times. (e) PSF of asteroid (10920) is half outside the MIRI image.(f) Asteroid (10920) is outside the FOV.

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