D. Čapek
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View article: 3D shape models for describing monolithic asteroids and meteoroids
3D shape models for describing monolithic asteroids and meteoroids Open
Context. Detailed knowledge of shapes is necessary for modeling certain processes affecting small Solar System bodies, such as the influence of radiative effects – like the YORP effect – on rotation. For meteoroids and small monolithic ast…
View article: A very young <i>τ</i>-Herculid meteor cluster observed during a 2022 shower outburst
A very young <i>τ</i>-Herculid meteor cluster observed during a 2022 shower outburst Open
Context . To date, only a few meteor clusters have been instrumentally recorded. This means that every new detection is an important contribution to the understanding of these phenomena, which are thought to be evidence of the meteoroid fr…
View article: Properties, age, and origin of a huge meteor cluster observed over Scandinavia on 30 October 2022
Properties, age, and origin of a huge meteor cluster observed over Scandinavia on 30 October 2022 Open
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 s…
View article: Meteor clusters observed by the video technique
Meteor clusters observed by the video technique Open
Several meteor clusters were observed by the video cameras deployed within the Czech Republic in recent years. Moreover, we also obtained data on another cluster which was detected above the Southern America. In this talk the basic data on…
View article: Ejection velocities, age, and formation process of SPE meteoroid cluster
Ejection velocities, age, and formation process of SPE meteoroid cluster Open
Context. Meteoroid clusters represent a unique opportunity to study processes of meteoroid disruptions in interplanetary space. We follow our previous work about the September epsilon Perseid (SPE) meteoroid cluster from 2016 with a detail…
View article: Ejection velocities, age, and formation process of SPE meteoroid cluster
Ejection velocities, age, and formation process of SPE meteoroid cluster Open
We follow our previous work about the September epsilon Perseid (SPE) meteoroid cluster from 2016. We assumed that the mass-dominated meteoroid is the parent body of the cluster and that the observed positions of meteoroids are controlled …
View article: Search for pairs and groups in the 2006 Geminid meteor shower
Search for pairs and groups in the 2006 Geminid meteor shower Open
Context. The existence of pairs and groups of meteors during meteor showers has been an open question for a long time. The double-station video observation of the 2006 Geminid meteor shower, one of the most active annual showers, is used f…
View article: Digital 3D shapes suitable for the description of meteoroids
Digital 3D shapes suitable for the description of meteoroids Open
Some processes in the physics of small solar system bodies depend on the detailed shape of the body. One of them is the YORP effect, which affects the rotation of asteroids and can lead to rotational bursting. The YORP effect can be modell…
View article: On the detectability of the meteor pairs created by fragmentation in near-Earth space
On the detectability of the meteor pairs created by fragmentation in near-Earth space Open
Although numerous observers reported that meteors appear in pairs or groups, recent papers based on instrumental observations did not confirm such results. At least, among older meteor showers such grouping was not confirmed. On the other …
View article: Meteor pairs and groups in Geminid meteor shower
Meteor pairs and groups in Geminid meteor shower Open
The existence of the pairs and larger groups of the meteors was already investigated in several papers. Recent statistical analyses of radar or optical data on several meteor showers provided rather negative results. Nevertheless, some lev…
View article: September epsilon Perseid cluster &#8211; collisional origin?
September epsilon Perseid cluster – collisional origin? Open
A bright fireball together with eight fainter meteors on parallel atmospheric trajectories was observed within 2 seconds by Koten et al. (2017). We will present a detailed analysis of this case focused on the collisional origin of the clus…
View article: A satellite orbit drift in binary near-Earth asteroids (66391) 1999 KW4 and (88710) 2001 SL9 -- Indication of the BYORP effect
A satellite orbit drift in binary near-Earth asteroids (66391) 1999 KW4 and (88710) 2001 SL9 -- Indication of the BYORP effect Open
We obtained thorough photometric observations of two binary near-Earth asteroids (66391) Moshup = 1999 KW4 and (88710) 2001 SL9 taken from 2000 to 2019 and derived physical and dynamical properties of the binary systems. We found that the …
View article: Small iron meteoroids
Small iron meteoroids Open
Context. A significant fraction of small meteors are produced by iron meteoroids. Their origin and the interaction with the atmosphere have not been well explained up to now. Aims. The goals of the study are to observe faint, slow, low alt…
View article: A robust method to identify meteor showers new parent bodies from the SonotaCo and EDMOND meteoroid orbit databases
A robust method to identify meteor showers new parent bodies from the SonotaCo and EDMOND meteoroid orbit databases Open
Context. Several new meteor showers are added to the International Astronomical Union (IAU) list of meteor showers every year. Given the multiplication of video meteor measurements new parent bodies are to be found in addition to new showe…
View article: September epsilon Perseid cluster as a result of orbital fragmentation
September epsilon Perseid cluster as a result of orbital fragmentation Open
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