R is the Radius of a Circle. It is 206265 secs and is an important figure is Astronomy
We talk about the Circles in Astronomy. The Ecliptic is a Circle, the Zodiac is a Circle and so on. And how do we measure the Radius of the Circle?
The Magic Figure of 206265 seconds is got by these derivations
Circumference = 2 Pi r
360 degrees = 2 Pi r
r = 360 degrees / 2 Pi
= 360 degrees / 2* 3.14
= 57.3 degrees
( One degree is 60 minutes and one minute is 60 seconds and hence one degree = 60*60 = 3600 seconds )
= 57.3 degrees * 3600 seconds
= 206265 seconds of arc
This is the how the Magic Figure in Astronomy, 206265 seconds, is derived !