[meteorite-list] meteor velocity
From: Jose Campos <josecamposcomet_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:47 2004 Message-ID: <005d01c3a8a2$e1dd7060$5dc216d5_at_computername> This is a multi-part message in MIME format. ------=_NextPart_000_005A_01C3A8A2.E17586D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi George Z. and Marco L. (and List), Many, many thanks for all your interesting info on the relative meteor = velocities and on their possible asteroidal or cometary origins. I suppose that the Earth's gravitational attraction onto these = meteoroids would not account too much, on their slow, or very fast = relative velocities? On a slightly different matter: What would you think that, considering = its ~60 Ton mass, the great HOBA meteorite's entry velocity might have = attained on atmosphere entry? And why was it that most of it, did no = desintegrate to smaller fragments? Was it because of a very low = velocity? (which implies an asteroidal origin). And what could possibly might have been its trajectory angle in relation = to the ground? (a very low angle, in order not to become half-buried = and/or not to break-up on impact?). Even at a lower minimum velocity of some 11 km/s, why is is that it did = not made a small hole/crater on the ground? (unless if its vestiges have = been eroded with time, bearing in mind it's estimated 80.000 yrs since = it fell to the ground). Any comments on this? Jos=E9 ------=_NextPart_000_005A_01C3A8A2.E17586D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1264" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY style=3D"COLOR: #000000; FONT-FAMILY: Arial" = bgColor=3D#ffffff><LABEL=20 id=3DHbSession SessionId=3D"272436507"></LABEL> <DIV><FONT size=3D2>Hi George Z. and Marco L. (and List),</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Many, many thanks for all your interesting info on = the=20 relative meteor velocities and on their possible asteroidal or = cometary=20 origins.</FONT></DIV> <DIV><FONT size=3D2>I suppose that the Earth's gravitational attraction = onto these=20 meteoroids would not account too much, on their slow, or very fast = relative=20 velocities?</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>On a slightly different matter: What would you think = that, considering its ~60 Ton mass, the great HOBA = meteorite's=20 entry velocity might have attained on atmosphere entry? And why was = it that=20 most of it, did no desintegrate to smaller fragments? Was it = because of a=20 very low velocity? (which implies an asteroidal origin).</FONT></DIV> <DIV><FONT size=3D2>And what could possibly might have been its = trajectory angle=20 in relation to the ground? (a very low angle, in order not to = become=20 half-buried and/or not to break-up on impact?).</FONT></DIV> <DIV><FONT size=3D2>Even at a lower minimum velocity of some 11 km/s, = why is is=20 that it did not made a small hole/crater on the ground? (unless if its = vestiges=20 have been eroded with time, bearing in mind it's estimated = 80.000 yrs=20 since it fell to the ground).</FONT></DIV> <DIV><FONT size=3D2>Any comments on this?</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Jos=E9</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2></FONT> </DIV> <P></P></BODY></HTML> ------=_NextPart_000_005A_01C3A8A2.E17586D0-- Received on Tue 11 Nov 2003 05:26:41 PM PST |
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