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Meteoroid i meteoryt. Powrót do podstaw i definicji

100%
Przylibski T. A.
Acta Societatis Metheoriticae Polonorum
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2023
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vol. 14
157-162
EN
As a result of the discussion of the wording contained in the latest definitions of a meteoroid and a meteorite and related terms existing in scientific sources, the author slightly modified these definitions. Modifications were made in such a way that the definitions became more unambiguous and universal, and thus could refer to meteorites of any origin on any bodies of any planetary system. Ultimately, these definitions were formulated as follows: Meteoroid: A 10 mm to 1-meter-size solid object of natural origin moving in interplanetary space or coming from space and moving through an atmosphere. Meteoroids maybe primary objects or derived by the fragmentation of larger celestial bodies, not limited to asteroids, but also including moons, planets, etc. Micrometeoroid: A meteoroid between 10 mm and 2 mm in size. Meteorite: A natural solid object larger than 10 mm in size, derived from a celestial body (or being a celestial body itself), that was transported by natural means from the body on which it formed to a region outside the dominant gravitational influence of that body, and that later collided with a natural or artificial body larger than itself (even if it is the same body from which it was launched). Weathering processes do not affect an object’s status as a meteorite as long as something recognizable remains of its original minerals or structure. An object loses its status as a meteorite if it is incorporated into a larger rock that becomes a meteorite itself. Micrometeorite: A meteorite between 10 mm and 2 mm in size. Interplanetary dust particle (IDP): A particle smaller than 10 mm in size moving in interplanetary space or coming from space and moving through an atmosphere. If such particles subsequently accrete to larger natural or artificial bodies, they are still called IDPs. The vaporised material after the meteor phase, that condenses into solid matter is called meteoric smoke. Physical phenomena (light, heat, shock, ionization) resulting from the high-speed entry of a solid object from space into an atmosphere are called a meteor. Meteors can occur on any planet or moon with a sufficiently dense and thick atmosphere. The advantage of defining the terms: meteoroid, meteorite and meteor separately and not linking these definitions to each other is the possibility of a more precise and logical definition of a meteoroid and a much broader, more universal definition of the term meteorite, not limiting it only to terrestrial conditions.
2
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Historia oraz stan obecny Polish Fireball Network

100%
Wiśniewski M., Żołądek P., Olech A., Tymiński Z., Maciejewski M., Raj A., Fietkiewicz K., Gozdalski M., Gawroński M. P., Suchodolski T., Myszkiewicz M., Stolarz M., Polakowski K.
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vol. 9
177-186
EN
The Polish Fireball Network (PFN) is a project to monitor regularly the sky over Poland in order to detect bright fireballs. In 2016 the 72 PFN cameras recorded 100 389 meteor events. Using these data and the UFOOrbit software 19 087 trajectories and orbits were calculated. In the following years we are planning intensive modernization of the PFN network including installation of dozens of new digital cameras.
PL
Polish Fireball Network (PFN) to projekt polegający na regularnym monitorowaniu nieba nad Polską w celu zaobserwowania jasnych meteorów i bolidów. W 2016 roku 72 kamery PFN zarejestrowały 100 389 meteorów. Za pomocą tych danych i oprogramowania UFOOrbit obliczono 19 087 trajektorie i orbity. W kolejnych latach planujemy intensywną modernizację sieci PFN, w tym instalację kilkudziesięciu nowych kamer cyfrowych.
3
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Spadki meteorytów w 2022 roku. Okoliczności i obserwacje

86%
Morys J., Żmija M.
Acta Societatis Metheoriticae Polonorum
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2023
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vol. 14
141-156
EN
In 2022, there were ten meteorites found worldwide after fresh falls. These are primarily ordinary chondrites, but one achondrite fall was also recorded. Meteorite falls occurred in the United States (3) and China (2) but also in Algeria, Brazil, Slovakia, India, and the Philippines. This paper shows how these meteorites were found and provides conclusions before future searches.
4
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Spadki meteorytów w 2023 roku. Okoliczności i obserwacje

86%
Żmija M.
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EN
In 2023, there were 12 meteorite falls around the world. Among them, the Saint-Pierre-le-Viger meteorite stands out, because the fall was preceded by the observation of an asteroid approaching the Earth. The article also drew attention to the presence of meteorites causing material damage and to the finds made by Polish searchers.
5
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Spadki meteorytów w latach 2020–2021. Okoliczności i obserwacje

86%
Morys J., Żmija M.
Acta Societatis Metheoriticae Polonorum
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2022
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vol. 13
67-106
EN
The paper presents the circumstances and data accompanying meteorite falls in recent years. The study contains descriptions of 21 falls observed in 2020 and 15 falls in 2021. These phenomena took place on all continents, except the polar regions. In conclusion, this work is a collection of several dozen stories about freshly fallen meteorites. They show many aspects connected with the observations and the hunting for new specimens.
6
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Spadki meteorytów w 2017 roku. Okoliczności i obserwacje

72%
Żmija M.
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vol. 9
187-205
EN
This scientific paper is a summary of the meteorite falls in 2017: Broek in Waterland (Holland), Tres Irmaos (Brazil), Serra Pelada (Brazil) and Kheneg Ljouâd (Morocco). The study also includes a section about unconfirmed falls, such as Puya Medio (Colombia), Mukundpura (India), Crawford Bay (Canada) and Sadiya (India). The vast majority of these specimens is ordinary chondrites of the L and LL groups. Only Serra Pelada meteorite turned out to be eucrite and Mukundpura is suspected to be carbonaceous chondrite. The author collects and organizes basic information about these findings and compares the latest data with statistics from previous years. The description of the circumstances of finding meteorites are brief and maintained in the popular-scientific tone. The text also includes a set of fireballs and bolides that could end with a meteorite fall. Among them is also a bolide that was visible from Poland. The thesis resembles the criteria for dividing meteors and notes the differences in their naming. It is extended by analogies and comparisons that make possible to look at the issues from different perspectives: from the statistical, through the media, to the historical one.
7
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Spadki meteorytów w 2019 roku. Okoliczności i obserwacje

72%
Żmija M.
Acta Societatis Metheoriticae Polonorum
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2020
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vol. 11
141-157
EN
In 2019 two meteorite showers occurred on Earth, which ended with the fall of hundreds of fragments in Cuba and Costa Rica. Apart from them, meteorites with a total weight of probably less than 10 kg landed in Algeria, Morocco, Iran, India, and Germany. This work is another summary of the year in terms of meteorite falls. It includes information on the circumstances of these phenomena and their scientific consequences. The author collected information from many sources, especially the media and meteorite hunters, to describe in a brief form how the meteorites fell last year. The purpose of his work is to gather basic and proven knowledge, which can serve as an inspiration to further explore the history of meteorites, own meteorite hunting, and draw the attention of researchers to interesting falls in distant regions of the world.
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