[meteorite-list] Small Asteroid 2010 AL30 Will Fly Past TheEarth
From: lebofsky at lpl.arizona.edu <lebofsky_at_meteoritecentral.com>
Date: Wed, 13 Jan 2010 09:13:58 -0700 (MST) Message-ID: <41f0d6d9af402e3a33619597c05b8fdf.squirrel_at_webmail.lpl.arizona.edu> Hi Chris: I am glad that we agree on this. Larry > It's seldom confusing in practice, since the context almost always makes > clear what is actually under discussion. I'm pretty consistent in my own > usage: the body before and during its incandescent (meteor) phase is a > meteoroid, and after its incandescent phase is a meteorite (thus, a > meteorite during its cold fall). > > Chris > > ***************************************** > Chris L Peterson > Cloudbait Observatory > http://www.cloudbait.com > > > ----- Original Message ----- > From: "Sterling K. Webb" <sterling_k_webb at sbcglobal.net> > To: "Jason Utas" <meteoritekid at gmail.com>; "Meteorite-list" > <meteorite-list at meteoritecentral.com> > Sent: Wednesday, January 13, 2010 12:14 AM > Subject: Re: [meteorite-list] Small Asteroid 2010 AL30 Will Fly Past > TheEarth > > >> Just to make things even more confusing, >> the IAU itself has approved the use of the >> term "meteor" in a dual sense to include the >> physical body itself, thus equating "meteoroid" >> with "meteor." >> >> Say what? >> >> Bob Verrish wrote an article about it: >> http://meteorite-recovery.tripod.com/2008/mar08.htm >> >> I quote the IAU: >> >> Definition of terms by the IAU Commission 22, 1961. >> >> A. meteor: in particular, the light phenomenon which results >> from the entry into the Earth's atmosphere of a solid particle >> from space; more generally, as a noun or an adjective, ANY >> PHYSICAL OBJECT or phenomenon associated with such >> an event. >> >> B. meteoroid: a solid object moving in interplanetary space, >> of a size considerably smaller than an asteroid and considerably >> larger than an atom or molecule. >> >> C. meteorite: any object defined under B which has reached >> the surface of the Earth without being completely vaporized. >> >> D. meteoric: the adjectival form pertaining to definitions A and B. >> >> E. meteoritic: the adjectival form pertaining to definition C. >> >> F. fireball: a bright meteor with luminosity which equals or >> exceeds that of the brightest planets. >> >> G. micrometeorite: a very small meteorite or meteoritic particle >> with a diameter in general less than a millimeter. >> >> Now, is everything perfectly clear? >> >> I didn't think so... > > > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > Received on Wed 13 Jan 2010 11:13:58 AM PST |
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