pro solar_params, jdn, carr, lat, lon, p, diam, dist
;
; Given a double-precision Julian date, this procedure returns six
; quantities useful in physical observations of the sun: Carrington
; rotation number (carr), the apparent heliographic latitude and
; longitude of the center of the solar disk in degrees (lat, lon), the
; apparent position angle of the sun's axis of rotation in degrees (p),
; the diameter of the solar disk in arc seconds (diam), and the
; distance from the earth to the sun in A.U. (dist).
;
; The input argument jdn may be a scalar or array, and the output
; arguments will agree in kind.
;
; B. Knapp, 1999-07-01
;
; Print usage?
  if n_params() lt 2 then begin
     print, '     solar_params, jdn, carr, lat, lon, p, diam, dist'
     print, ' '
     return
  endif
;
  helios, jdn, carr, lat, lon, p, diam, dist
  return
  end