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VERSION:2.0
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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20100930T000000
DTEND;TZID=Atlantic/Canary:20100930T010000
UID:iactalks-237
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/237
CREATED:2010-09-30T00:00:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Origin of two primitive NEAs: (3200) Phaethon and 1998 RQ36
DESCRIPTION:Origin of two primitive NEAs: (3200) Phaethon and 1998 RQ36\nDr
 . Julia de León\n\nUnderstanding the composition and the nature of any as
 teroid approaching the Earth, and consequently potentially hazardous, is a
  matter of general interest, both scientific and practical. The potentiall
 y hazardous asteroid 1999 RQ36 is especially accessible to spacecraft and 
 is the primary target of NASA's OSIRIS-REx sample return mission. Spectra 
 of this asteroid point to the most primitive meteorites (CIs and CMs) as t
 he most likely analogs. Asteroid (3200) Phaethon is also particularly inte
 resting. Together with 2005 UD and 2001 YB5, is one of the only 3 near-Ear
 th asteroids with associated meteor showers, which mostly come from comets
 . There is evidence of the presence of hydrated minerals on its surface, u
 sually associated with organic material. Both asteroids are classified as 
 "B". B-type asteroids are found mostly in the middle and outer main belt a
 nd are believed to be primitive and volatile-rich. We combine dynamical an
 d spectral information to identify the most likely main-belt origin of the
 se two objects.
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