Norton
          Astronomical Ephemeris Program Package


     Type a sentence using the words below (any not listed

are ignored).



Key words to use are:




             Sun
             Mercury
             Venus
             Earth
             Mars             Input one or many
             Jupiter
             Saturn              'List the Right Ascension and
             Uranus               Declination of the Sun, Mercury,
             Neptune              and Saturn for tomorrow'
             Pluto
             Visible
             Inner Planets
             Outer Planets
             All Planets*

             Vesta
             Juno
             Ceres
             Pallas
             Asteroids

             Comet [Name]



             Month NN,NNNN    'Dec 15,1946'

             'To'             Indicates more than one date

                                 'Where is Saturn from March 1,1974
                                  to March 31,1974?'

             Every N          Increment in days

                                 'Velocity of Mars from March 1,1974
                                  to March 31,1974 Every 5'

             Today*

             Yesterday

             Tomorrow

             Julian           Returns Julian date

                                 'What is the Julian date
                                  for May 1,1946?'




             NN:NN            Colon indicates time is being input

             PM               Adds 12 hours

             Noon

             UT               Greenwich Mean Time

             Midnight         24:00



             Same Date        Retains current parameter
             Same Planet

                                 'Plot Mars from May 15,1974
                                  to July 15,1974 Every 7'

                                 'Right Ascension of the Same Planets
                                  and Same Dates on the Lineprinter'


             Data             Lists all data below
                              or may be called individually

                                 'Gimme the Data for Mars'

                                 'Orbital Longitude of Saturn'

                  Velocity
                  Orbital Longitude     Degrees from the Vernal Equinox
                  Solar Distance
                  Constellation
                  Elongation            Angle from Sun
                  Geocentric Distance
                  Ecliptic X,Y,Z        3-Space Coordinates
                  Right Ascension
                  Hour Angle            R.A. minus Siderial
                  Declination
                  Altitude  Azimuth     Coordinates referenced to
                                        local horizon and North Pole


             Where            Same as 'Constellation, Right Ascension
                               and Declination'
                                 'Where is Mars?'

             Elements         Gives Orbital Elements at last Epoch figured

             Obliquity        Angle between Ecliptic and Equator

             Siderial Time    Prints time (local and siderial)



             Plot             For use on Tek graphics terminal

                Solar System     Indicates Solar System
                Orbit              drawing is wanted

                                 'Plot the Orbits of the Inner Planets'

                Sky*          Draws the view from Earth

                                 'Plot the Sky tonight at 8:00 PM'



             Miles            Output lengths in
             KM               requested measure

             By Planet        List output by desired factor
             By Date

             Lineprinter      Send printed output to that device

             Help             This text

                                 'I need Help on the Lineprinter'

             Some Help        List of key words


              An asterisk (*) above indicates
          These will be assumed if not specified


                    < > < > < > < > < >


          All   calculations   are  made  for  a  particular
     longitude and latitude.  Time is  local  (PST)  or  GMT
     (optional).   To change for a different location and/or
     time zone, a new position must be put  in  the  program
     MNEPCH.BAS.  See setup instructions.

          An 'URP' printed during execution indicates that a
     system-located  difficulty has been encountered and may
     be ignored.
          If an error is disastrous or caused by  a  program
     failure, the current job is aborted and program returns
     to start.  Such an error is distinguished with the line
     number of the error being printed:

           "Subscript out of range in Line 2100"

          Normal difficulties are anticipated:

       "Device hung or write locked -- Lineprinter"

     This will cause output to keyboard.

        Bug reports and suggestions are encouraged.
STOP
Altitude & Azimuth      Asteroids               By Date
By Planet               Ceres                   Comet [Name]
Constellation           Data                    Declination
Earth                   Ecliptic X,Y,Z          Elements
Every N                 Geocentric Distance     Help
Hour Angle              Inner Planets           Julian
Juno                    Jupiter                 KM
Lineprinter             Mars                    Mercury
Midnight                Miles                   Month NN,NNNN
Neptune                 NN:NN                   Noon
Obliquity               Orbital Longitude       Outer Planets
Pallas                  Plot                    Pluto
PM                      Right Ascension         Same Date
Saturn                  Siderial Time           Sky
Solar Distance          Solar System            Some Help
Sun                     To                      Today
Tomorrow                Uranus                  UT
Velocity                Venus                   Vesta
Where                   Yesterday
STOP