R, the Magic Figure in Astronomy

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 !