WSJT-X/lib/moondopjpl.f90

44 lines
1.4 KiB
Fortran

subroutine MoonDopJPL(nyear,month,nday,uth4,lon4,lat4,RAMoon4, &
DecMoon4,LST4,HA4,AzMoon4,ElMoon4,vr4,dist4)
implicit real*8 (a-h,o-z)
real*4 uth4 !UT in hours
real*4 lon4 !East longitude, degrees
real*4 lat4 !Latitude, degrees
real*4 RAMoon4 !Topocentric RA of moon, hours
real*4 DecMoon4 !Topocentric Dec of Moon, degrees
real*4 LST4 !Locat sidereal time, hours
real*4 HA4 !Local Hour angle, degrees
real*4 AzMoon4 !Topocentric Azimuth of moon, degrees
real*4 ElMoon4 !Topocentric Elevation of moon, degrees
real*4 vr4 !Radial velocity of moon wrt obs, km/s
real*4 dist4 !Echo time, seconds
twopi=8.d0*atan(1.d0) !Define some constants
rad=360.d0/twopi
clight=2.99792458d5
call sla_CLDJ(nyear,month,nday,djutc,j)
djutc=djutc + uth4/24.d0
dut=-0.460d0
east_long=lon4/rad
geodetic_lat=lat4/rad
height=40.
nspecial=0
call ephem(djutc,dut,east_long,geodetic_lat,height,nspecial, &
RA,Dec,Az,El,techo,dop,fspread_1GHz,vr)
RAMoon4=RA
DecMoon4=Dec
LST4=0. !These two variables not presently used
HA4=0.
AzMoon4=Az*rad
ElMoon4=El*rad
vr4=vr
dist4=techo
return
end subroutine MoonDopJPL