An explanation of the data is given at the bottom of the page
Star Type - G0
Distance From Planet - 102300000 Million Miles/1.1 AU
Mass - 1.17 times that of Earth's Sun
Luminosity - 1.26 times that of Earth's Sun
Diameter - 881280 Miles
Insolation - 1.04 times that of Earth's Sun
As compared to Planet Earth:
Oceania's sun is a G0 star, which is both bigger and brighter than ours. Both the mass and the diameter of this star are bigger than that of our Sun. The Sun is farther away from the planet than Earth's sun is, which offsets the fact that the Sun is both bigger and brighter to some extent. The sun still looks 1.26 times brighter than on Earth (luminosity), and the planets' surface recieves 1.04 times more heat energy (insolation). As a result, Oceania is on average warmer than Earth is.