Atmospheric trajectory and heliocentric orbit of the Ejby meteorite fall in Denmark on February 6, 2016
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Atmospheric trajectory and heliocentric orbit of the Ejby meteorite fall in Denmark on February 6, 2016. / Spurný, P.; Borovička, Jan; Baumgarten, G.; Haack, Henning; Heinlein, D.; Sørensen, Anton Norup.
In: Planetary and Space Science, Vol. 143, 01.09.2017, p. 192-198.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Atmospheric trajectory and heliocentric orbit of the Ejby meteorite fall in Denmark on February 6, 2016
AU - Spurný, P.
AU - Borovička, Jan
AU - Baumgarten, G.
AU - Haack, Henning
AU - Heinlein, D.
AU - Sørensen, Anton Norup
PY - 2017/9/1
Y1 - 2017/9/1
N2 - A very bright bolide illuminated the sky over Denmark and neighboring countries on February 6th, 2016 at 21:07:18-23UT. It terminated by a multiple meteorite fall in the heavily populated area of the western outskirts of Copenhagen. Several meteorites classified as the H5/6 ordinary chondrites have been found shortly after the fall and total recovered mass reached almost 9kg (Haack, 2016). Although this spectacular bolide has been reported by many casual witnesses, the instrumental records are very scarce, mainly due to bad weather over Denmark and neighboring countries. Despite it we were able to collect five instrumental records taken from different locations which were useful for the analysis of this event. We used three high resolution digital photographic images taken in Germany, one high resolution radiometric light curve taken by the northernmost Czech automated fireball observatory and one video record taken by a surveillance camera on the Danish west coast where a part of the fireball trajectory was recorded. It allowed us to reliably determine basic parameters defining the luminous trajectory of the bolide in the atmosphere and also heliocentric orbit of the initial meteoroid causing this spectacular meteorite fall. We found that this event was caused by a relatively fragile 50cm meteoroid with initial mass about 250kg. It entered the atmosphere with velocity of 14.5kms-1 and quite steep entry angle of 62°. Its luminous flight started at 85.5km and after 76km long trajectory it terminated at 18.3km. The heliocentric orbit of this meteoroid was of Apollo type with low inclination of 1° and perihelion distance just inside the Earth's orbit. It had a relatively large semimajor axis of 2.8AU and aphelion distance 4.64AU. It is the second largest aphelion distance among all meteorites with known orbits and the orbit had the same character as that of the Košice meteorite (H5 ordinary chondrite), which fell on February 28, 2010 (Borovička et al., 2013).
AB - A very bright bolide illuminated the sky over Denmark and neighboring countries on February 6th, 2016 at 21:07:18-23UT. It terminated by a multiple meteorite fall in the heavily populated area of the western outskirts of Copenhagen. Several meteorites classified as the H5/6 ordinary chondrites have been found shortly after the fall and total recovered mass reached almost 9kg (Haack, 2016). Although this spectacular bolide has been reported by many casual witnesses, the instrumental records are very scarce, mainly due to bad weather over Denmark and neighboring countries. Despite it we were able to collect five instrumental records taken from different locations which were useful for the analysis of this event. We used three high resolution digital photographic images taken in Germany, one high resolution radiometric light curve taken by the northernmost Czech automated fireball observatory and one video record taken by a surveillance camera on the Danish west coast where a part of the fireball trajectory was recorded. It allowed us to reliably determine basic parameters defining the luminous trajectory of the bolide in the atmosphere and also heliocentric orbit of the initial meteoroid causing this spectacular meteorite fall. We found that this event was caused by a relatively fragile 50cm meteoroid with initial mass about 250kg. It entered the atmosphere with velocity of 14.5kms-1 and quite steep entry angle of 62°. Its luminous flight started at 85.5km and after 76km long trajectory it terminated at 18.3km. The heliocentric orbit of this meteoroid was of Apollo type with low inclination of 1° and perihelion distance just inside the Earth's orbit. It had a relatively large semimajor axis of 2.8AU and aphelion distance 4.64AU. It is the second largest aphelion distance among all meteorites with known orbits and the orbit had the same character as that of the Košice meteorite (H5 ordinary chondrite), which fell on February 28, 2010 (Borovička et al., 2013).
KW - Bolide
KW - Meteorites
KW - Meteoroids
KW - Meteors
U2 - 10.1016/j.pss.2016.11.010
DO - 10.1016/j.pss.2016.11.010
M3 - Journal article
AN - SCOPUS:85007481312
VL - 143
SP - 192
EP - 198
JO - Planetary and Space Science
JF - Planetary and Space Science
SN - 0032-0633
ER -
ID: 178845855