The North Star, a supergiant
Polaris
Sits almost exactly above Earth’s north pole, so it barely moves through the night.
- Distance
- 433 light years
- Surface
- 5,742 °C
- Size
- 38 × the Sun
Outer layers
- H 73%
- He 25%
- O, C, Fe and heavier 2%
Glowing hydrogen plasma
Modelled from typical stellar abundances