[meteorite-list] meteor velocity
From: Jose Campos <josecamposcomet_at_meteoritecentral.com>
Date: Thu Apr 22 10:27:45 2004 Message-ID: <004201c3a644$99758a70$88c316d5_at_computername> This is a multi-part message in MIME format. ------=_NextPart_000_003F_01C3A644.990F2780 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi George, Sorry for the delay in writting back to you. Many thanks for your interesting, prompt explanation! I am aware about the +- minimum amd maximum relative orbital speeds that = meteors can attain on atmosphere entering, depending on how they = encounter Earth. What surprised me was that the visually described "very fast" meteors, = are of a cometary origin! Take the Leonids, for instance, (Nov 14-20), they are known to be associated to P/comet Tempel-Tuttle and they are described as "very = fast"; However, the E Taurids, associated to comet P/Encke, are described as = "slow" meteors (Oct 10-Dec 5), so it seems that the visual perception of = a meteor's velocity is not a reliable indicator that the meteor has,or = has not a cometary origin? Regards, Jos=E9 ------=_NextPart_000_003F_01C3A644.990F2780 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"2908942837"></LABEL> <DIV><FONT size=3D2>Hi George,</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Sorry for the delay in writting back to = you.</FONT></DIV> <DIV><FONT size=3D2>Many thanks for your interesting, prompt=20 explanation!</FONT></DIV> <DIV><FONT size=3D2>I am aware about the +- minimum amd maximum relative = orbital=20 speeds that meteors can attain on atmosphere entering, depending on how = they=20 encounter Earth.</FONT></DIV> <DIV><FONT size=3D2>What surprised me was that the visually = described "very=20 fast" meteors, are of a cometary origin!</FONT></DIV> <DIV><FONT size=3D2>Take the Leonids, for instance, (Nov 14-20), they = are known=20 to</FONT></DIV> <DIV><FONT size=3D2>be associated to P/comet Tempel-Tuttle and they are = described=20 as "very fast";</FONT></DIV> <DIV><FONT size=3D2>However, the E Taurids, associated to comet P/Encke, = are=20 described as "slow" meteors (Oct 10-Dec 5), so it seems=20 that the visual perception of a meteor's velocity is not a = reliable=20 indicator that the meteor has,or has not a cometary origin?</FONT></DIV> <DIV><FONT size=3D2>Regards,</FONT></DIV> <DIV><FONT size=3D2>Jos=E9</FONT></DIV> <DIV> </DIV> <DIV><FONT size=3D2></FONT> </DIV> <P></P></BODY></HTML> ------=_NextPart_000_003F_01C3A644.990F2780-- Received on Sat 08 Nov 2003 05:06:45 PM PST |
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