Solar radius
Solar radius is a unit of distance used to express the size of stars in astronomy relative to the Sun. The solar radius is usually defined as the radius to the layer in the Sun's photosphere where the optical depth equals 2/3:

:formula_1

 is approximately 10 times the average radius of Jupiter, about 109 times the radius of the Earth, and 1/215th of an astronomical unit, the distance of the Earth from the Sun. It varies slightly from pole to equator due to its rotation, which induces an oblateness in the order of 10 parts per million.
Q126017
distance
Concept
Q523
star
Concept
Q333
astronomy
Concept
Q525
Sun
CEL
Q173817
radius
Concept
Q525
Sun
CEL
Q6372
photosphere
Concept
Q7098844
optical depth
UNK
Q319
Jupiter
CEL
Q2
Earth
CEL
Q1811
astronomical unit
Concept
Q6464
rotation
Concept
Q48440
Solar radius
Concept
+2^^http://www.w3.org/2001/XMLSchema#decimal
2
NUMBER
+3^^http://www.w3.org/2001/XMLSchema#decimal
3
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+10^^http://www.w3.org/2001/XMLSchema#decimal
10
NUMBER
+1^^http://www.w3.org/2001/XMLSchema#decimal
1
NUMBER
+215^^http://www.w3.org/2001/XMLSchema#decimal
215
NUMBER
+10^^http://www.w3.org/2001/XMLSchema#decimal
10
NUMBER
measured physical quantity
model item
parent astronomical body