# ====================================================================== # Real alt/azi observations pertaining to Venus # Ross Bannister, Data Assimilation Research Centre, Reading, UK # ====================================================================== # AstroObs input file for Astronomical Data Assimilation # ====================================================================== # longitude (+/-1, degrees, minutes) # latitude (+/-1, degrees, minutes) # First guess at orbital elements a, e, i, Omega, omega-bar, epsilon # Run modes: # XSEC : Generate cost function cross sections # ANAL : Perform variational analysis # RECO : Reconfigure input file (Alt/azi to RA/dec) # TRAJ : Use input parameters to generate RA/dec trajectory # Bracket for length of semi-major axis (AU) a(min), a(max) # Bracket for inclination of orbit to ecliptic (degrees) i(min), i(max) #---------------------------------------------------------------------- # Sample Input File: for each observation ... # Type of observation 1 or 2 (see below) # Times in UT (year, month, day, hour, min) # E.g. 2001, 02, 05, 00, 14 # Type 1: observation of type RA h, m, error (m) # Dec d, m, error (m) # Type 2: observation of type alt (d), error (d) # azi (d), error (d) # ----- END OF HEADER -------------------------------------------------- #### PRELIMINARY DETAILS ############################################## #Longitude -1 0 58 #Latitude 1 51 27 #First guess for orbital parameters a, e, i, Omega, omega-bar, epsilon 0.7 0.1 5.0 90.0 100.0 110.0 #Run mode, XSEC, ANAL, RECO, TRAJ ANAL #Verbose? 1=on, 0=off 0 #Range of length of semi-major axis (AU) 0.10000 2.00000 #Range of inclination (degrees) 0. 45.00000 #Convergence cutoff in length of increment 0.0001 #Maximum number of iterations 100 #Number of iterations performing partial minimization 0 #Perform refraction correction 1=on, 0=off (NOT YET IMPLEMENTED) 0 #Include 2nd derriv of forward model in Hessian 1=on, 0=off 0 #====================================================================== #### OBSERVATION DETAILS FOLLOW ####################################### 2 2001 02 13 18 58 23.0 0.5 251.4 2.0 #----------------------------------- 2 2001 07 26 03 01 14.5 1.5 73.9 1.2 #----------------------------------- 2 2001 08 21 04 21 22.2 1.5 84.1 1.2 #----------------------------------- 2 2001 09 05 04 18 16.2 1.5 82.3 1.2 #----------------------------------- 2 2002 04 07 19 39 7.4 1.5 281.3 1.2 #----------------------------------- 2 2002 05 30 20 50 16.6 1.5 289.6 1.2 #----------------------------------- 2 2002 06 17 21 29 11.9 1.5 290.7 1.2 #----------------------------------- 2 2002 06 23 21 10 13.4 1.5 285.3 1.2 #----------------------------------- 2 2002 07 16 21 11 6.0 1.5 281.4 1.2 #----------------------------------- 2 2002 07 25 20 19 10.2 1.5 264.8 1.2 #----------------------------------- 2 2002 07 29 19 58 13.7 1.5 261.7 1.2 #----------------------------------- 2 2002 09 10 18 01 9.9 1.5 228.5 1.2 #----------------------------------- 2 2002 12 19 07 03 22.1 1.5 150.5 1.2 #----------------------------------- 2 2003 02 15 07 04 11.7 1.5 145.6 1.2