Author: Jakub Koukal

Orbit analysis of a bright Southern sigma Sagittariids fireball

  Jakub Koukal¹ ¹ Valašské Meziříčí Observatory, Vsetínská 78, 75701 Valašské Meziříčí, Czech Republic j.koukal@post.cz   Abstract During twilight on June 14, 2017, CEMeNt network cameras recorded a long and bright fireball with an absolute magnitude of -7.9 ± 0.2m, whose atmospheric path began over the northwest of the Romania and ended up above southern Poland. This fireball belonging to the Southern sigma Sagittariids meteor shower was recorded from 9 cameras of the CEMeNt network. Atmospheric path of the fireball as well as heliocentric orbit of the meteoroid are analyzed within the article.   Introduction During twilight on June...

Read More

Two bright fireballs over Great Britain

Jakub Koukal¹, Richard Káčerek² ¹ Valašské Meziříčí Observatory, Vsetínská 78, 75701 Valašské Meziříčí, Czech Republic j.koukal@post.cz ² United Kingdom Meteor Observation Network, United Kingdom ukmeteornetwork@gmail.com   Abstract On November 24, 2017 shortly before midnight and on November 25, 2017 shortly before sunrise, two very bright fireballs lit up the sky over the United Kingdom. The UKMON (United Kingdom Meteor Observation Network) cameras and onboard cameras in the automobiles recorded their flight. The fireballs paths in the Earth´s atmosphere were calculated, as well as the orbits of bodies in the Solar System. The flight of both bodies, the absolute magnitude...

Read More

CEMeNt in the first half of 2017

Central European Meteor Newtork (CEMeNt), established in 2010, is a platform for cross-border cooperation in the field of videometeor observations between the Czech Republic and Slovakia. From the beginning, observation activities of the CEMeNt network have been coordinated with the Slovak Video Meteor Network (SVMN) and other similar networks in Central Europe (the Hungarian HMN network, the Polish PFN network, etc.). During seven years of operation, CEMeNt has undergone extensive development. A total of 38 video systems work on 18 fixed stations in the Czech Republic and Slovakia, including 6 NFC cameras and 4 cameras for spectroscopic observations. A...

Read More

New meteor showers – yes or not?

Jakub Koukal¹ ¹ Valašské Meziříčí Observatory, Vsetínská 78, 75701 Valašské Meziříčí, Czech Republic j.koukal@post.cz Meteor astronomy is a very young branch of astronomy, its development began only 200 years ago. Even in the 18th century, there was a presumption that the meteors are present in the Earth’s atmosphere, that their origin is not extraterrestrial. There are more than 2500 years old observations of meteor showers (Lyrids meteor shower in 687 BC or Perseids in 36 AD), but science has not been interesting until the end of the 18th century. The great boom of meteoric astronomy occurred in the mid-20th...

Read More

R suite for analysis of the EDMOND database

This article presents the results of statistical analysis of the EDMOND database. The growing amount of data in the database requires effective tool for analysis and data management. This instrument is a library of scripts in the R language, developed by members of UKMON. Scripts allow elimination of bad data and efficient statistical analysis of the database. Introduction R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues....

Read More