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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20130404T103000
DTEND;TZID=Atlantic/Canary:20130404T113000
UID:iactalks-479
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/479
CREATED:2013-04-04T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:And the sky fell on our heads: all about the Chelyabinsk event
DESCRIPTION:And the sky fell on our heads: all about the Chelyabinsk event\
 nDr. Javier Licandro\n\nOn February         15,         while we were prep
 aring to observe the close approach of the         potentially         haz
 ardous asteroid (PHA) 2012 DA14 another small asteroid         entered the
  Earth’s         atmosphere over Russia. The object, of about 17m in
  diameter and          11.000 tons exploded in         the atmosphere
          generating a bright flash, a powerful shock wave and small       
   fragmentary         meteorites. About 1500 people were injured because o
 f the shock         wave effects in         the city of Chelyabinsk locate
 d east of the Ural Mountains and         on the border of         Europe a
 nd Asia. The more than 400 kilotons released suggest         that this was
          largest asteroid that entered the Earth atmosphere since the     
     1908 Tunguska         event.\nThe         differences         between 
 the orbits of DA14 and the asteroid that caused the         Chelyabinsk ev
 ent         showed that both objects are not related. The composition of t
 he         meteorite and         the spectrum of DA14 we obtained with the
  GTC also support that.\nIn this talk I         will resume all the inform
 ation about the Chelyabinsk event and         discuss the         relevanc
 e of studying the near-Earth asteroids, in particular         the PHAs, an
 d present         the main results of our study of asteroid DA14 (de Le&oa
 cute;n et al.         2013). I will also         discuss the relevance of 
 space mission studies on this objects         and resume our         parti
 cipation in MarcoPolo-R and AIDA missions. 
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