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International Meteor Organization
Приєднався 13 січ 2017
Meteor pairs and groups simulation
Meteor pairs and groups simulation
Pavel Koten, David Čapek
A number of observers reported that meteors appear in pairs or even bigger groups. Such conclusions are rather subjective as these originate mainly from visual observers. The instrumental detections of such events are rather rare. Recently, we analysed arrival times of Geminid meteors recorded by the video cameras. Despite the relatively higher number of close in time meteors no firm evidence for real pairs was found. All the detected cases can be explained as random coincidence. Results of the recent Perseid observational campaign are more promising. To answer the question of longevity of meteoroid pairs and groups on the heliocentric orbits a simple model was prepared which follows motion of the fragments under the solar radiation pressure. It seems that such pairs dissipate relatively quickly, mainly if the fragments mass ratio is higher.
IMC 2023
imc2023.imo.net/program
Pavel Koten, David Čapek
A number of observers reported that meteors appear in pairs or even bigger groups. Such conclusions are rather subjective as these originate mainly from visual observers. The instrumental detections of such events are rather rare. Recently, we analysed arrival times of Geminid meteors recorded by the video cameras. Despite the relatively higher number of close in time meteors no firm evidence for real pairs was found. All the detected cases can be explained as random coincidence. Results of the recent Perseid observational campaign are more promising. To answer the question of longevity of meteoroid pairs and groups on the heliocentric orbits a simple model was prepared which follows motion of the fragments under the solar radiation pressure. It seems that such pairs dissipate relatively quickly, mainly if the fragments mass ratio is higher.
IMC 2023
imc2023.imo.net/program
Переглядів: 39
Відео
Long-duration artificial meteors created during the CZ-3B R/B re-entry observed by AMOS
Переглядів 53Рік тому
Long-duration artificial meteors created during the CZ-3B R/B re-entry observed by AMOS Daniela Bartková, Jiří Šilha, Juraj Tóth, Leonard Kornoš Space debris objects, such as upper stages left after rocket missions, orbit the Earth in an environment that affects their dynamic properties. The perigee gradually decreases and after reaching critical altitude, re-entry begins. A re-entering object ...
Towards improved seismological meteor localization: finite difference modelling of meteor-induced...
Переглядів 70Рік тому
Towards improved seismological meteor localization: finite difference modelling of meteor-induced acoustic and seismic signals Jan-Phillip Föst, Dario Eickhoff, Runa Ostermeier, Mohsen Koushesh, Joachim Ritter Meteor trajectory determination plays a pivotal role in modern astronomical research, enabling scientists to gain valuable insights into the composition of meteors, their parent bodies, a...
Estimating a meteor’s trajectory using seismic data: a case study of the November 2017 meteor over D
Переглядів 72Рік тому
Estimating a meteor’s trajectory using seismic data: a case study of the November 2017 meteor over Germany Dario Eickhoff, Jan-Phillip Föst, Runa Ostermeier, Mohsen Koushesh, Joachim Ritter A meteor’s trajectory in the Earth’s atmosphere carries information about its origin within or beyond the solar system. Knowledge about meteoroid origins helps to achieve a better estimation of the meteoroid...
Fitting your spectral observations to models
Переглядів 66Рік тому
Fitting your spectral observations to models J. Zender, D. Koschny, R. Rudawska, A. Kariapis Since several years, a growing number of ground-based stations provide spectral data of meteor events. The analysis of these spectral data requires the comparison with reflectance models of atoms, molecules, and ions. In the talk the background to the model we use for the CILBO (Canary Island Long-Basel...
The high temperature component in fireball spectra
Переглядів 36Рік тому
The high temperature component in fireball spectra Vlastimil Vojáček, Jiří Borovička, Pavel Spurný Two temperature components are observed in meteor head spectra (Borovicka, 1994). ˇ The low temperature ( 3500K 5500K) component consists of lines from excited neutral atoms like for example Na I, Mg I, Fe I, or Ca I. The high temperature ( 10000K) component is connected with ionized atoms of Ca I...
Updates in digital meteor spectroscopy
Переглядів 37Рік тому
Updates in digital meteor spectroscopy Marko Šegon Meteor spectroscopy has been an active field of research in the Czech Republic since 1960 when the first single-station system of analogue cameras was set up at the Ondrejov Observatory. That system, operational until 2018, is now replaced by 12 stations of the European Fireball Network - each equipped with two digital Canon EOS 6D cameras. The...
Compensation for the effect of moon on meteor shower flux densities
Переглядів 21Рік тому
Compensation for the effect of moon on meteor shower flux densities Sirko Molau We have observed for long, that the moon has a clear impact on meteor shower flux densities obtained from video meteor observations at meteorflux.org. A new method to compensate for this effect will be presented and discussed. IMC 2023 imc2023.imo.net/program
A new approach to analyze single-site video meteor observations
Переглядів 19Рік тому
A new approach to analyze single-site video meteor observations Norton O. Szabó, Krisztián Sárneczky, Antal Igaz, Márton Rózsahegyi, József Vinkó, Livia Deme, László L. Kiss We present our new pipeline utilizing the wide-field Sony a7 videocamera for the analysis of meteor outbursts, astrometric measurements, and a novel approach for radiant determination. The methodology was successfully appli...
Periodic short-term variations in meteor shower fluxes
Переглядів 23Рік тому
Periodic short-term variations in meteor shower fluxes Sirko Molau During the 1999 Leonid meteor storm, we have detected perodic variations in activity with a wavelength of about 7 minutes. We will report on a re-validation of the results obtained more than 20 years ago, and if similar variations have been found for other meteor showers as well. IMC 2023 imc2023.imo.net/program
Video observation of fireballs by the European Fireball Network
Переглядів 51Рік тому
Video observation of fireballs by the European Fireball Network Lukáš Shrbený, Pavel Spurný, Jiří Borovička Video recordings of fireballs have been added in recent years as a full complement to the photographic data. For most fireballs where video recordings are used, these data are important for refining the initial velocity and thus the heliocentric orbit. Video data also provide information ...
Tau-Herculids meteor shower observed by AMOS cameras
Переглядів 28Рік тому
Tau-Herculids meteor shower observed by AMOS cameras Filip Hlobik, Juraj Tóth, Tomáš Paulech, Peter Vereš Comet 73P/Schwassmann-Wachmann experienced a break-up in 1995 and numerous authors predicted an increase in tau-Herculids meteor shower activity. The outburst occurred at the end of May 2022. Reports of expeditions and observations were one of the main themes of IMC 2022. Now, we present so...
Tau Herculids in Texas
Переглядів 51Рік тому
Tau Herculids in Texas Bernd Gährken In 1995, comet Schwassmann-Wachmann-3 surprised astronomers with a sharp, unexpected increase in its brightness from about 13 mag to about 7 mag in just a few days. In 2005, some scientists predicted a possible increase in activity for the years 2022 and 2049, with the dust cloud produced during the 1995 eruption being cut off in 2022. The earth was moving a...
An expected new shower caused by Comet 46P/Wirtanen in 2023
Переглядів 118Рік тому
An expected new shower caused by Comet 46P/Wirtanen in 2023 J. Vaubaillon, Q. Ye, A. Égal, M. Sato Although Jupiter family comet 46P/Wirtanen is a near Earth object, no shower has ever been detected from this potential parent body. Here we report a possible birth of a new shower from this comet on Dec. 12th 2023 around 10:15 UT. The level of the shower is hardly predictable since the shower is ...
Current status of the Extension of the FRIPON network in Chile
Переглядів 78Рік тому
Current status of the Extension of the FRIPON network in Chile Felipe Gutierrez, Sébastien Bouquillon, Rene A. Mendez, Hernan Pulgar, Marcelo Tala Pinto, Katherine Vieira, Millarca Valenzuela Picón, Andrés Jordán, Christian H.R. Nitschelm, Massinissa Hadjara, José Luis Nilo Castellón, Maja Vuckovic, Hebe Cremades, Bin Yang, Adrien Malgoyre, François Colas, Pierre Vernazza, Pierre Bourget, Emman...
The behavior of the beginning height in Quadrantids, Perseids, and Geminids
Переглядів 14Рік тому
The behavior of the beginning height in Quadrantids, Perseids, and Geminids
Influence of weather parameters on the dark flight computation of fireballs
Переглядів 25Рік тому
Influence of weather parameters on the dark flight computation of fireballs
Complementary applications to meteor cameras: cloud cover estimation via deep learning
Переглядів 68Рік тому
Complementary applications to meteor cameras: cloud cover estimation via deep learning
Meteor detection on radio spectrograms by means of computer vision
Переглядів 95Рік тому
Meteor detection on radio spectrograms by means of computer vision
Fireball analysis using the auroral optical system ALIS_4D
Переглядів 25Рік тому
Fireball analysis using the auroral optical system ALIS_4D
Revolutionizing meteor work: converging innovations in Generative AI, Website DevOps, and AllSky7
Переглядів 40Рік тому
Revolutionizing meteor work: converging innovations in Generative AI, Website DevOps, and AllSky7
A simplified meteor spectrum classification scheme
Переглядів 49Рік тому
A simplified meteor spectrum classification scheme
The dust size distribution in comet 67P/Churyumov-Gerasimenko and comparison with meteor information
Переглядів 38Рік тому
The dust size distribution in comet 67P/Churyumov-Gerasimenko and comparison with meteor information
Chaos in meteoroid streams: the example of Draconids, Leonids, and Taurids
Переглядів 50Рік тому
Chaos in meteoroid streams: the example of Draconids, Leonids, and Taurids
A new book on meteor astronomy: Atlas of Earth's Meteor Showers
Переглядів 161Рік тому
A new book on meteor astronomy: Atlas of Earth's Meteor Showers
An optimized design for camera boxes of meteor surveillance systems
Переглядів 126Рік тому
An optimized design for camera boxes of meteor surveillance systems
Remarks on searches for interstellar meteors - quick database assessment
Переглядів 42Рік тому
Remarks on searches for interstellar meteors - quick database assessment
Regarding the parent bodies in the Meteor Data Center
Переглядів 27Рік тому
Regarding the parent bodies in the Meteor Data Center
Wow, I'm surprised you caught some. I've been collecting micrometorites about 3 years now. I find example 5 interesting, I find these and they usually are conclamarent of smaller micrometorites to small for me to extract. This was very interesting, hard to find info on micrometorites. Thanks
A green meteor means it was made of nickel-iron.
Yay im in new zealand!!
cant wait to try see this tonight in auckland!! Cool that Geminid is coming along also!!
Excellent talk, Felipe. Congratulations. Very nice work, which is part of your Thesis. Thanks also to the support from FCLA & Dr. Sebastien Bouquillon and Francois Colas.
Promo SM
Excellent talk! 👏👏
Excellent. Good science.
sorry guys i was just warping to lightspeed
Very interesting talk.
I just saw one of this on the highway tonight Sunday 23 October 2022 driving east to west from Arnhem to Rotterdam around 21:50, and i remember seeing a light in the night far away on my left driving south from Rotterdam to Zuid Bejerland in August in the night around 23:00
You mean like this? ua-cam.com/users/shortsdEyCdq3w8bg?feature=share
fascinating just to see just how much information can be gathered from the way the CC meteor' velocity and brightness changes during the descent.
So is my guess that exceeding such speeds can not be reached. Perhaps some magnetic , photon or other particles wind will kill the flying vessel. Forget the speed of light
Awesome footage. One night me and my best friend were out on the lake. It's not dark sky but close and there was a meteor shower and every time one that was good and bright, we would hear the Bass popping at the surface thinking it was a bug for dinner. This video took me back to one of those nights when we were drinking some beers out on the lake in a 10ft John boat. We were 14yo. Thanks again. Hadn't thought about that in a long time
Good work.
Nanjya korya
Can there be anything beautiful than this❤️
No
Impressive. I filmed this year two of them even brighter. Greetings Bo
I want to see emmm, my 3 best, over -6,0 mag, were at limit to be filmed 😭😭😭
Coi sao băng ban đêm rất đẹp ha
These are the voyages of the star ship enterprise awesome slow motion
Thats Looks Like a timejump
It was probably a UFO.
Fantastic work to the entire team!! Great presentation that I could follow and appreciate the hours of work and math invested. CONGRATS!! I do weekly meteorite Hangouts on my channel. We discussed "tracked" meteorites a few weeks ago. I will be calling them "instrument observed" from now on. I had the honor to interview the Wilcock family that got "hammered" by the Winchcombe meteorite. ua-cam.com/video/3vsh1UJtaV0/v-deo.html
Its great to see suresh sir here representing Nepal 🤩🤩
Great!
Great one!
Does the distance table allow for refraction - from my investigations the refraction at low angles is not well characterized.
mmm intelligent and lovely girls ♥♥
I don't understand...do you offer tutoring classes?
Very interesting!
How’s your cat
A lot of things have been going by recently.
Nice, good presentation at the last IMC. I hope that Canon finally put one of their low light sensors, like the 35mm FHDXS into an affordable consumer camera. If they don't do it soon I'm going to buy a Sony!
The Perseids are swift meteors. There are two causes of the green colour. The first is at the start of the meteor trail when it is still high in the atmosphere. It is emission from a forbidden oxygen line at 5577A. The second is caused mostly by emission from magnesium in the minerals of the meteorid at around 5175A. Cheers, Dr B.
Superr!!