Enter the YEAR BC AD

Enter geographic LONGITUDE
DEGREES MINUTES EAST WEST

Enter geographic LATITUDE
DEGREES MINUTES NORTH SOUTH

Enter the altitude of the STAR

Select a STAR
ALCYONE ALDEBARAN ALNILAM ALPHARD ANTARES ARCTURUS CANOPUS CAPELLA CAPH CASTOR DUBHE dzeta_SCO epsilon_TAU HAMAL PHACT pi_SCO POLLUX PROCYON REGULUS RIGIL_KENTAURUS SADALMELIK SADALSUUD SCHEDAR SHERATAN SIRIUS SPICA VEGA ZUBEN_ELGENUBI OTHER
if you have clicked on "OTHER", you must enter data
in another formulary (under the output windows)

Results will appear in "alert box" (30 seconds with a 486 SX)

The historians use the julian calendar. However, the gregorian calendar is the only one
allowing to locate easily a phenomenon with regard to the seasons (equinoxes and solstices).
Example: spring equinox in 1950 BC
March 21^st in the gregorian calendar ; April 7^th in the julian calendar -------------------------------------------------------------------------------
if you have clicked on "OTHER" in the stars list,
you must enter the following data:

Right ascension (in 2000 AD)
Hours Minutes Seconds

Declination (in 2000 AD) Always positive (select North-South)
Degrees Minutes Seconds NORTH SOUTH

Visual magnitude

Proper motion in right ascension (seconds of time / year)
East : +
West : -

Proper motion in declination (seconds of arc / year)
North : +
South : -

Radial velocity (in Km/second)
Receding : +
Nearing : -

Distance in parsecs (1 parsec = 3.26 light years)

You can now click on RUN (hereabove)