Quick AppttoObserved
CALL sla_AOPQK (RAP, DAP, AOPRMS, AOB, ZOB, HOB, DOB, ROB)
RAP,DAP  D  geocentric apparent $\left[\phantom{\rule{0.3em}{0ex}}\alpha ,\delta \phantom{\rule{0.3em}{0ex}}\right]$ (radians) 
 
AOPRMS  D(14)  starindependent apparenttoobserved parameters: 
 
(1) 
 geodetic latitude (radians) 
(2,3) 
 sine and cosine of geodetic latitude 
(4) 
 magnitude of diurnal aberration vector 
(5) 
 height (metres) 
(6) 
 ambient temperature (K) 
(7) 
 pressure (mb) 
(8) 
 relative humidity (0 – 1) 
(9) 
 wavelength ($\mu m$) 
(10) 
 lapse rate (K per metre) 
(11,12) 
 refraction constants A and B (radians) 
(13) 
 longitude + eqn of equinoxes + “sidereal $\Delta $UT” (radians) 
(14) 
 local apparent sidereal time (radians) 
AOB  D  observed azimuth (radians: N=0, E=$9{0}^{\circ}$) 
 
ZOB  D  observed zenith distance (radians) 
 
HOB  D  observed Hour Angle (radians) 


DOB  D  observed Declination (radians) 


ROB  D  observed Right Ascension (radians) 