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Subject: Re: Pear shaped Earth
From: Noyce, Bill (william.noyce@XXX.XXX)
Date: Wed Oct 02 2002 - 09:03:47 EDT
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@XXX.XXX]
Sent: Wednesday, October 02, 2002 2:28 AM
To: NAVIGATION-L@XXX.XXX
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.
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