399 attendees from 33 countries had come to ACM 2012 (includeing Japanese high school students). We, LOC members, thank to all of attendees who had gathered to the meeting.

See you again at next ACM 2014 in Helsinki.

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Asteroids, Comets, Meteors (ACM) 2012 will be held 16 - 20 May, 2012, in Niigata, Japan, at TOKI Messe (Niigata Convention Center). The meeting will start on Wednesday (16th) and end on Sunday (20th).

If you want to receive further information (1st circular and so on) of the ACM2012, please register your e-mail address for at the following site:

https://www.lpi.usra.edu/meeting_portal/iofi/?mtg=acm2012 (at LPI web site).

[NOTE] Annular Solar Eclipse (on May 21) | JpGU Meeting (May 20 - 25)

The Asteroids, Comets, Meteors (ACM) meeting is the premier international gathering of scientists who study small bodies. The ACM series began in 1983 in Uppsala, Sweden, as a means of bringing together different groups within the asteroid, comet, and meteor communities who do not often have the opportunity to interact. From this first ACM meeting, a regular conference began. The conference now takes place every three years*, and it is the pre-eminent meeting for small-bodies research, with attendance usually in excess of 400. The 2012 ACM meeting will be the 11th in the series and will be the first time in Asian Region.

The scope of presentations and discussion is broad, including all topics related to asteroids, comets, and meteors. Examples include discovery and cataloguing of objects, observations of meteor showers by radar, modeling the gas production of comets, and plans for future asteroid sample returns.

ACM 2012 is expected to bring together experts on small-bodies studies from around the world. It It will be the first meeting held after several significant and anticipated events, which include the return of "Hayabusa" mission and the expected result of "Dawn", as well as many others, have come to pass. ACM 2012 will highlight the research currently being conducted, encourage discussion among researchers in various areas, and identify new avenues of research.

* The past ACMs have been hosted by Uppsala (Sweden; 1983, 1985 and 1989), Flagstaff (USA; 1991), Belgirate (Italy; 1993), Versailles (France; 1996), Ithaca (USA; 1999), Berlin (Germany; 2002), Búzios (Brazil; 2005), and Baltimore (USA; 2008).


  • TNOs and Centaurs
  • Observations of latest comets and meteor showers
  • NEO hazard and searches: Close-passing asteroids including 2005 YU55, Pan-STARRS and other new surveys
  • Space-borne observation of small bodies: AKARI, Herschel, WISE, HST, etc.
  • Lutetia by Rosetta
  • 103P/Hartley 2 by EPOXI and other observations
  • 9P/Tempel 1 by Stardust-NExT and other observations
  • Hayabusa (Itokawa) and Stardust (Wild 2) sample return missions
  • Vesta by Dawn and other observations including HED meteorite studies
  • Other small-body missions (New Horizons, Hayabusa-2, OSIRIS-Rex, MarcoPolo-R, etc.)
  • Recent meteorite falls including 2008 TC3 and the Almahata Sitta meteorite
  • Meteors and dust
  • Dynamics and interrelations
  • Compositional studies from observations and laboratory experiments
  • Internal structure of small bodies, including presence/formation of satellites
  • Impact processes
  • Surface processes and geology of small bodies
  • Origin of the solar system and small bodies
  • Water, organics, and astrobiology of small bodies
  • Human exploration of NEOs
  • Others

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