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| author | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
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| committer | Joseph Hunkeler <jhunkeler@gmail.com> | 2015-07-08 20:46:52 -0400 |
| commit | fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 (patch) | |
| tree | bdda434976bc09c864f2e4fa6f16ba1952b1e555 /math/slalib/doc/geoc.hlp | |
| download | iraf-linux-fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4.tar.gz | |
Initial commit
Diffstat (limited to 'math/slalib/doc/geoc.hlp')
| -rw-r--r-- | math/slalib/doc/geoc.hlp | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/math/slalib/doc/geoc.hlp b/math/slalib/doc/geoc.hlp new file mode 100644 index 00000000..538474d1 --- /dev/null +++ b/math/slalib/doc/geoc.hlp @@ -0,0 +1,33 @@ +.help geoc Jun99 "Slalib Package" +.nf + + SUBROUTINE slGEOC (P, H, R, Z) + + - - - - - + G E O C + - - - - - + + Convert geodetic position to geocentric (double precision) + + Given: + P dp latitude (geodetic, radians) + H dp height above reference spheroid (geodetic, metres) + + Returned: + R dp distance from Earth axis (AU) + Z dp distance from plane of Earth equator (AU) + + Notes: + 1) Geocentric latitude can be obtained by evaluating ATAN2(Z,R). + 2) IAU 1976 constants are used. + + Reference: + Green,R.M., Spherical Astronomy, CUP 1985, p98. + + P.T.Wallace Starlink 4th October 1989 + + Copyright (C) 1995 Rutherford Appleton Laboratory + Copyright (C) 1995 Association of Universities for Research in Astronomy Inc. + +.fi +.endhelp |