Dear Chandrashekharji

[Guest guest]

Dear Chandrashekhar ji,

 

This is in continuation of our earlier discussion thread.

 

Traditionally astrologers are using geocentric co-ordinates which

assumes that everyone was born at the centre of the earth. Modern

astrologers use co-ordinate system that considers even height of a

place from the sea level called as topocentric co-ordinates. This is a

modern technique where planet positions are calculated as seen from

the actual surface location of the Earth. The difference between the

geocentric and topocentric systems is that of parallax (the apparent

difference in an object's position as viewed from different points.)

The more distant the object, the less the parallax. For the Moon, the

parallax can reach about one degree in both longitude and declination.

For the rest of the planets, it is less than half a minute of arc.

 

This means that we have been calculating WRONG moon positions years

after years. If Parashara and Varahamihira come to know abt this

mistake will they continue to do it or correct it immediately.

 

 

Tarkatirth