Properties, age, and origin of a huge meteor cluster observed over Scandinavia on 30 October 2022

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00617155" target="_blank" >RIV/67985815:_____/24:00617155 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0364109" target="_blank" >https://hdl.handle.net/11104/0364109</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202348618" target="_blank" >10.1051/0004-6361/202348618</a>

Result language

angličtina

Original language name

Properties, age, and origin of a huge meteor cluster observed over Scandinavia on 30 October 2022

Original language description

Context. A meteor outburst consisting of at least 22 meteors above the Baltic sea and southern Scandinavia that occurred on 30 October 2022 was recorded using multiple cameras. A bright fireball was followed by fainter meteors over a 10 second period. All the meteors were travelling on parallel trajectories. Aims. The goal of this study is to determine the atmospheric trajectories and photometric masses of meteors and to use these data to determine the specifics of the progenitor meteoroid break-up and cluster formation. Methods. Double and triple-station observations using video cameras were used for the calculation of the atmospheric trajectories and photometric masses of the meteors. Their relative positions and mass distribution were then used to determine the time and cause of the meteoroid fragmentation. Results. The relative position of the cluster particles in the atmosphere and the distribution of their masses best correspond to the separation of the smaller fragments from the mass-dominant fragment 10.6 ± 1.7 days before the collision with Earth, assuming a meteoroid bulk density of 1000 kg m-3. The ejection velocities are in the range 0.16-0.61 ms-1. The directions of the ejection velocities are bounded by a cone with an apex angle of 43. The axis of this cone has ecliptic coordinates of l = 154 and b = 26 and is 66 away from the direction to the Sun. Thermal stresses appear to be the most likely cause of such meteor cluster formation.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/GA20-10907S" target="_blank" >GA20-10907S: Meteor clusters: An evidence for fragmentation of meteoroids in interplanetary space</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Volume of the periodical

683

Issue of the periodical within the volume

March

Country of publishing house

FR - FRANCE

Number of pages

10

Pages from-to

A5

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85186549122