The equatorial radius of the star was estimated to be 2.03 solar radii, and the polar radius 1.63 solar radii a 25 % increase of the stellar radius from pole to equator.
22.
His estimate of 6, 339.9 km for the Earth radius was only 16.8 km less than the modern value of 6, 356.7523142 km ( WGS84 polar radius " b " ).
23.
This equation is usually solved by the ansatz R ( r ) = r ^ { \ lambda }, but through use of log-polar radius, it can be changed into an equation with constant coefficients:
24.
By a slightly different argument, it's 0.33 % larger than the distance on a sphere with a radius equal to Earth's polar radius .-- talk ) 22 : 18, 27 February 2015 ( UTC)
25.
This star is rotating at about 92 % of its critical speed, completing a full rotation every 1.12 days . This is giving the star an oblate spheroid shape with an equatorial bulge that is 24 % larger than the polar radius.
26.
You can also calculate the kilometers per degree of longitude, " k, " using one of the following formulas ( ? is the latitude, 6378.14 km is the equatorial radius, and 6356.8 km is the polar radius ):
27.
:: Of course, if you want to consider how far the Earth is from being spherical rather than how rough its surface is, then you have to account for the variation between the equatorial and polar radius, which is about 0.35 %.
