Values o $1\,R_{\odot}$ Units
6.955×108 metres
6.955×105 kilometres
0.0046491 AU
432,450 miles
2.254×10−8 pc

Solar radius is a unit o distance uised tae express the size o starns in astronomy equal tae the current radius o the Sun:

$1\,R_{\odot} = 6.955\times 10^8\,\hbox{m} = 0.0046491$

The solar radius is approximately 695,500 kilometres (432,450 miles) or aboot 110 times the radius o the Yird, or 10 times the average radius o Jupiter. It varies slichtly frae pole tae equator due tae its rotation, which induces an oblateness o order 10 pairts per million. See 1 gigametre for similar distances.

The SOHO spacecraft wis uised tae measur the diameter o the Sun bi timin transits o Mercur athort the surface durin 2003 an 2006. The result wis a measured radius o 696,342 ± 65 kilometres (432,687 ± 40 miles).[1]

## References

1. Emilio, Marcelo; Kuhn, Jeff R.; Bush, Rock I.; Scholl, Isabelle F., "Measuring the Solar Radius from Space during the 2003 and 2006 Mercury Transits", arXiv, retrieved 2012-03-28