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Subject: Re: Geodesic Data
From: Vic Fraenckel (vfraenc1@XXX.XXX)
Date: Thu Oct 24 2002 - 05:33:35 EDT
Gaston,
Here are the values for the equatorial and polar radii that you requested. I
cut them out of one of my programs. The array named ellipseMajor() contains
the equatorial radii, the one named ellipseMinor() contains the polar radii
and the one named ellipseName() contains the name of the ellipse. The radii
are in meters.
I hope this helps. Good luck on your homework!
Vic
'ellipsoid major axes in meters
ellipseMajor(1) = 6377563.396 '1 airy
ellipseMajor(2) = 6377340.189 '2 airy modified
ellipseMajor(3) = 6378160# '3 australian national
ellipseMajor(4) = 6377397.155 '4 bessel 1841
ellipseMajor(5) = 6378206.4 '5 clarke 1866 - NAD27
ellipseMajor(6) = 6378249.145 '6 clarke 1880
ellipseMajor(7) = 6377276.345 '7 everest
ellipseMajor(8) = 6377304.063 '8 everest modified
ellipseMajor(9) = 6378166# '9 fischer 1960
ellipseMajor(10) = 6378155# '10 fischer 1960 modified
ellipseMajor(11) = 6378150# '11 fischer 1968
ellipseMajor(12) = 6378160# '12 geodetic reference system 1967
ellipseMajor(13) = 6378137# '13 geodetic reference system 1980
ellipseMajor(14) = 6378200# '14 helmert
ellipseMajor(15) = 6378270# '15 hough
ellipseMajor(16) = 6378388# '16 international
ellipseMajor(17) = 6378245# '17 krassovsky
ellipseMajor(18) = 6378160# '18 south american
ellipseMajor(19) = 6378165# '19 wgs 60
ellipseMajor(20) = 6378145# '20 wgs 66
ellipseMajor(21) = 6378135# '21 wgs 72
ellipseMajor(22) = 6378137# '22 wgs 84
'ellipsoid minor axes in meters
ellipseMinor(1) = 6356256.909 '1 airy
ellipseMinor(2) = 6356036.205 '2 airy modified
ellipseMinor(3) = 6356774.719 '3 australian national
ellipseMinor(4) = 6356078.963 '4 bessel 1841
ellipseMinor(5) = 6356583.8 '5 clarke 1866 - NAD27
ellipseMinor(6) = 6356514.87 '6 clarke 1880
ellipseMinor(7) = 6356075.413 '7 everest
ellipseMinor(8) = 6356103.039 '8 everest modified
ellipseMinor(9) = 6356784.284 '9 fischer 1960
ellipseMinor(10) = 6356773.32 '10 fischer 1960 modified
ellipseMinor(11) = 6356768.337 '11 fischer 1968
ellipseMinor(12) = 6356774.516 '12 geodetic reference system 1967
ellipseMinor(13) = 6356752.314 '13 geodetic reference system 1980
ellipseMinor(14) = 6356818.17 '14 helmert
ellipseMinor(15) = 6356794.343 '15 hough
ellipseMinor(16) = 6356911.946 '16 international
ellipseMinor(17) = 6356863.019 '17 krassovsky
ellipseMinor(18) = 6356778.304 '18 south american
ellipseMinor(19) = 6356783.287 '19 wgs 60
ellipseMinor(20) = 6356759.769 '20 wgs 66
ellipseMinor(21) = 6356750.52 '21 wgs 72
ellipseMinor(22) = 6356750.321 '22 wgs 84
'ellipsoid common names
ellipseName(1) = "Airy" '1
ellipseName(2) = "Airy Modified" '2
ellipseName(3) = "Australian" '3
ellipseName(4) = "Bessel 1841" '4
ellipseName(5) = "Clark 1866 - NAD27" '5
ellipseName(6) = "Clarke 1880" '6
ellipseName(7) = "Everest" '7
ellipseName(8) = "Everest Modified" '8
ellipseName(9) = "Fischer 1960" '9
ellipseName(10) = "Fischer 1960 Modified" '10
ellipseName(11) = "Fischer 1968" '11
ellipseName(12) = "Geodetic Reference 1967" '12
ellipseName(13) = "Geodetic Reference 1980" '13
ellipseName(14) = "Helmert" '14
ellipseName(15) = "Hough" '15
ellipseName(16) = "International" '16
ellipseName(17) = "Krassovsky" '17
ellipseName(18) = "South American 1969" '18
ellipseName(19) = "WGS-60" '19
ellipseName(20) = "WGS-66" '20
ellipseName(21) = "WGS-72" '21
ellipseName(22) = "WGS-84" '22
________________________________________________________
Victor Fraenckel - The Windman vfraenc1@XXX.XXX
KC2GUI www.windsway.com
Home of the WindReader Electronic Theodolite
Read the WIND
"Victory at all costs, victory in spite of all terror, victory however long
and hard the road may be; for without victory there is no survival."
- Winston [Leonard Spencer] Churchill (1874 - 1965)
Dost thou not know, my son, with how little wisdom the world is governed?
-Count Oxenstierna (ca 1620)
----- Original Message -----
From: "Gaston Petrocelli" <petrocelli@XXX.XXX>
To: <NAVIGATION-L@XXX.XXX>
Sent: Thursday, October 24, 2002 1:23 AM
Subject: Geodesic Data
| Hello everyone,
|
| My name is Gaston Petrocelli and I'm a 3rd. deck officer from the
uruguayan
| merchant marine currently taking a post graduate course at the Marine
| Technical College in Kobe, Japan. I just found this mailing list yesterday
| and have had a lot of fun while reading you... it's amazing how easy one
| can forget about classical navigation when modern gadgets do all the work
| for us. I hope to take advantage of all your knowledge and make some
| contributions as well.
|
| I have a request now, I have to prepare a program to calculate difference
| of meridional parts under different geodesic systems to present as
| "homework". The problem is that I haven't been able to access reliable
| constants to use on my calculations. If anybody knows where I can find
them
| online I'd appreciate it greatly. I'm in need of the following Equatorial
| and Polar Radius: by Bessel, Clark, Hayword, Krasovsky and L. A. U..
|
| Thank you very much in advance and hope to hear from you soon.
|
|
| Gaston Petrocelli
| Merchant Marine Officer
|