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Re: Pear shaped Earth
From: Bill Noyce
Date: 2002 Oct 2, 09:03 -0400
From: Bill Noyce
Date: 2002 Oct 2, 09:03 -0400
I don't think Peter's quite right here. Rather, I would conclude that the average length of a degree of latitude is 59.71 miles between 0 and 10 degrees, and (5400.6-4797.6)/10=60.30 miles between 80 and 90 degrees. To the precision I'm likely to work in, these are all equal to 60 degrees... -- Bill -----Original Message----- From: Peter Fogg [mailto:ffive@TPG.COM.AU] Sent: Wednesday, October 02, 2002 2:28 AM To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: Re: Pear shaped Earth David Weilacher wrote: > Can anyone give me a numerical representation of the shape of earth? I'm > thinking something like the length of a line of latitude for each 10 degrees > north and south of the equator. I'm told that Meridional Distances do indicate this: 10 d lat 597.11 20 1194.58 30 1792.72 40 2391.75 50 2991.82 60 3592.91 70 4194.91 80 4797.59 90 5400.63 so, if I've understood correctly, a degree at 10d of lat.is 59.71 nm, and a degree at 90d of lat. is 60.007 nm.