Table B.1
Results and characteristics of the infrasound analysis of 24 fireballs for which a significant signature could be identified in the IMS infrasound data.
| Date | Time | number of detecting stations | Period in s | Best estimate energy in kt TNT equivalent | Best estimate energy in Joule | Size in m | Mass in kg |
|---|---|---|---|---|---|---|---|
| 2017-07-31 | 22:01:34 | 1 | 3.1 | 2.2E-01 | 9.2E+11 | 1.7* | 8178* |
| 2017-09-05 | 5:11:25 | 3 | 3.8 ± 1.8 | 4.5E-01 | 1.9E+12 | 2.2 | 17585 |
| 2017-10-09 | 12:51:48 | 2 | 1.3 ± 0.1 | 1.3E-02 | 5.4E+10 | 0.7* | 480* |
| 2018-02-12 | 2:15:18 | 2 | 3.1 ± 1.1 | 2.3E-01 | 9.6E+11 | 1.8* | 8533* |
| 2018-09-13 | 0:51:20 | 2 | 0.5 ± 0.1 | 4.4E-04 | 1.8E+09 | 0.2* | 16* |
| 2018-09-17 | 1:08:01 | 6 | 3.5 ± 1.8 | 3.5E-01 | 1.5E+12 | 2.0* | 13333* |
| 2018-11-17 | 21:48:23 | 1 | 3.0 | 2.1E-01 | 8.6E+11 | 1.4 | 4715 |
| 2019-02-01 | 18:17:09 | 2 | 1.0 ± 0.6 | 5.3E-03 | 2.2E+10 | 0.5 | 166 |
| 2019-04-22 | 11:06:18 | 2 | 2.6 ± 1.5 | 1.2E-01 | 5.2E+11 | 1.4* | 4622* |
| 2019-05-04 | 15:35:45 | 1 | 1.7 | 3.1E-02 | 1.3E+11 | 0.9* | 1156* |
| 2019-05-22 | 15:16:00 | 1 | 1.1 | 7.2E-03 | 3.0E+10 | 0.6* | 267* |
| 2019-06-22 | 21:25:45 | 3 | 6.3 ± 2.5 | 2.5E+00 | 1.0E+13 | 3.9 | 90086 |
| 2019-07-23 | 20:42:56 | 1 | 3.4 | 3.1E-01 | 1.3E+12 | 1.9 | 10030 |
| 2019-08-22 | 17:07:27 | 1 | 2.2 | 6.8E-02 | 2.8E+11 | 1.2* | 2489* |
| 2019-09-12 | 2:34:57 | 1 | 2.1 | 6.3E-02 | 2.6E+11 | 1.0 | 1758 |
| 2019-09-30 | 11:08:37 | 1 | 5.0 | 1.1E+00 | 4.6E+12 | 3.0* | 40889* |
| 2019-11-05 | 11:24:49 | 1 | 1.5 | 2.0E-02 | 8.4E+10 | 0.5 | 224 |
| 2019-11-28 | 20:30:52 | 1 | 1.1 | 6.2E-03 | 2.6E+10 | 0.6 | 308 |
| 2020-01-15 | 06:31:39 | 3 | 1.8 ± 1.4 | 4.0E-02 | 1.7E+11 | 1.0* | 1511* |
| 2020-01-24 | 11:13:30 | 1 | 1.6 | 2.3E-02 | 9.2E+10 | 0.6 | 409 |
| 2020-03-23 | 16:51:50 | 4 | 3.0 ± 1.5 | 2.1E-01 | 8.8E+11 | 1.7* | 7822* |
| 2020-05-12 | 23:22:55 | 1 | 2.9 | 1.8E-01 | 7.5E+11 | 1.6* | 6667* |
| 2020-07-24 | 18:36:12 | 1 | 4.0 | 5.4E-01 | 2.3E+12 | 2.4* | 20444* |
| 2020-08-21 | 13:41:11 | 1 | 12.0 | 2.3E+01 | 9.6E+13 | 8.2* | 853333* |
Notes. Listed are the date and energy as computed from the GLM data, followed by the number of the IMS infrasound stations in whose data we found a signal of the fireball, the extracted period at maximum amplitude and the computed energy in kt TNT equivalent and joules. The determined size and mass of the corresponding impacting meteoroid or asteroid are also given. These values are computed using the velocity information provided by CNEOS, if available. If not, a velocity of 15 km/s is assumed. These cases are marked by an asterisk; see Table A.1. Additionally, for the size, a spherical shape and a density of 3000 kg/m3 are assumed.
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