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Meteoroids impacting the Earth on a daily basis are fragments of asteroids and comets. By studying fireballs produced during their disintegration in the atmosphere, we can gain information about their source regions and the properties of…

Earth and Planetary Astrophysics · Physics 2022-11-30 J. Borovicka , P. Spurny , L. Shrbeny

We present a fireball detected in the night sky over Kyoto, Japan on UT 2017 April 28 at ${\rm 15^{h}\,58^{m}\,19^{s}}$ by the SonotaCo Network. The absolute visual magnitude is $M_{\rm v}$=$-$4.10$\pm$0.42mag. Luminous light curves obtain…

Earth and Planetary Astrophysics · Physics 2020-01-22 Toshihiro Kasuga , Mikiya Sato , Masayoshi Ueda , Yasunori Fujiwara , Chie Tsuchiya , Jun-ichi Watanabe

For centuries extremely-long grazing fireball displays have fascinated observers and inspired people to ponder about their origins. The Desert Fireball Network (DFN) is the largest single fireball network in the world, covering about one…

Earth and Planetary Astrophysics · Physics 2020-04-15 P. M. Shober , T. Jansen-Sturgeon , E. K. Sansom , H. A. R. Devillepoix , M. C. Towner , P. A. Bland , M. Cupák , R. M. Howie , B. A. D. Hartig

The asteroid (25143) Itokawa is a target object of the Japanese sample return mission, HAYABUSA. We have observed Itokawa in optical wave- length (R-band) with the 1.05-m Schmidt telescope at the Kiso Observatory, the 2.24-m telescope of…

There is an unceasing incoming flux of extraterrestrial materials reaching the Earth's atmosphere. Some of these objects produce luminous columns when they ablate during the hypersonic encounter with air molecules. A few fireballs occur…

Earth and Planetary Astrophysics · Physics 2024-05-29 E. Peña-Asensio , J. M. Trigo-Rodríguez , A. Rimola

We obtained N- and Q-band observations of the Apollo-type asteroid 25143 Itokawa during its close Earth approach in July 2004 with TIMMI2 at the ESO 3.6 m telescope. Our photometric measurement, in combination with already published data,…

Astrophysics · Physics 2009-11-11 T. G. Mueller , T. Sekiguchi , M. Kaasalainen

The extraordinary weather conditions available between February and March 2022 over Spain have allowed us to analyze the brightest fireballs recorded by the monitoring stations of the Spanish Meteor Network (SPMN). We study the atmospheric…

Earth and Planetary Astrophysics · Physics 2024-05-29 Eloy Peña-Asensio , Josep M. Trigo-Rodríguez , Albert Rimola , Marc Corretgé-Gilart , Detlef Koschny

We have analysed the orbits and ablation characteristics in the atmosphere of 59 earth-impacting fireballs, produced by meteoroids one meter in diameter or larger, described here as meter-scale. Using heights at peak luminosity as a proxy…

Earth and Planetary Astrophysics · Physics 2015-12-23 P. Brown , P. Wiegert , D. Clark , E. Tagliaferri

Bright fireballs or bolides are caused by meteoroids entering the Earth's atmosphere at high speed. On 2013 February 15, a superbolide was observed in the skies near Chelyabinsk, Russia. Such a meteor could be the result of the decay of an…

Earth and Planetary Astrophysics · Physics 2013-12-17 C. de la Fuente Marcos , R. de la Fuente Marcos

The near-Earth asteroid (25143) Itokawa was characterised in great detail by the Japanese Hayabusa mission. We revisited the available thermal observations in the light of the true asteroid properties with the goal to evaluate the…

Earth and Planetary Astrophysics · Physics 2015-06-19 T. G. Müller , S. Hasegawa , F. Usui

On February 28, 2021, a fireball dropped $\sim0.6$ kg of recovered CM2 carbonaceous chondrite meteorites in South-West England near the town of Winchcombe. We reconstruct the fireball's atmospheric trajectory, light curve, fragmentation…

Geminids are the most active annual meteor shower observed on Earth. Their parent is an active asteroid, (3200) Phaethon, which is a target of the planned DESTINY+ mission of the Japan Aerospace Exploration Agency (JAXA). The exact physical…

Earth and Planetary Astrophysics · Physics 2024-02-01 Tomáš Henych , Jiří Borovička , Vlastimil Vojáček , Pavel Spurný

Objects gravitationally captured by the Earth-Moon system are commonly called temporarily captured orbiters (TCOs), natural Earth satellites, or minimoons. TCOs are a crucially important subpopulation of near-Earth objects (NEOs) to…

Earth and Planetary Astrophysics · Physics 2019-12-05 P. M. Shober , T. Jansen-Sturgeon , E. K. Sansom , H. A. R. Devillepoix , P. A. Bland , M. Cupák , M. C. Towner , R. M. Howie , B. A. D. Hartig

The first interstellar meteor larger than dust was detected by US government sensors in 2014, identified as an interstellar object candidate in 2019, and confirmed by the Department of Defense in 2022. Here, we describe an additional…

Earth and Planetary Astrophysics · Physics 2022-12-28 Amir Siraj , Abraham Loeb

Surface roughness is an important metric in understanding how the geologic history of an asteroid affects its small-scale topography and it provides an additional means to quantitatively compare one asteroid with another. In this study, we…

The paper presents an analysis of Polish Fireball Network (PFN) observations of enhanced activity of the Southern Taurid meteor shower in 2005 and 2015. In 2005, between October 20 and November 10, seven stations of PFN determined 107…

The origin of the Taurid complex is still debated. In addition to comet 2P/Encke, various asteroids were proposed to be members of the complex and thus possible parent bodies of Taurid meteoroids. Studies of physical properties of Taurid…

Earth and Planetary Astrophysics · Physics 2020-01-27 Jiri Borovicka , Pavel Spurny

On 2010 October 13, the Apollo type 20-meter asteroid 2010 TB54 passed within 6.1 lunar distances from the Earth. On the same date, but 11.4 hours earlier, exactly at 02:52:32 UT, the sky over central Poland was illuminated by -8.6…

Earth and Planetary Astrophysics · Physics 2015-07-31 A. Olech , P. Zoladek , M. Wisniewski , R. Rudawska , J. Laskowski , K. Polakowski , M. Maciejewski , T. Krzyzanowski , T. Fajfer , Z. Tyminski

On Aug 22, 2016, a bright fireball was observed by the Desert Fireball Network in South Australia. Its pre-atmosphere orbit suggests it was temporarily captured by the Earth-Moon system before impact. A search was conducted two years after…

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