[vsnet-chat 4016] Eliocentric Correction

["M.Martignoni" <maxmartignoni@libero.it>]

Dear Friends,
I am working about a "MS-Excel" worksheet giving to the user the possibily
to collect, to store and to make a first analisys of data coming from
observational sessions of variable stars.
When measures are concerning short period variables, like eclipsing binaries
and RR Lyrae type stars, is necessary to take into consideration also the
effect of the geocentric position of the observer.
Could be someone so kind to let me have the exact formula of the so called
"eliocentric correction" to insert in the above-mentioned worksheet, knowing
that I have available as starting informations G.J.D. and R.A./DECL. of the
star?.
Thank you very much.

Clear Sky!

Massimiliano Martignoni
Via Don Minzoni 26
I-20020 Magnago
Milano
Italy
maxmartignoni@libero.it

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