At ∼10,170 K, the host star is at the dividing line between stars of type A and B, and we measure the KELT9b’s day-side temperature to be ∼4600 K.
This is as hot as stars of stellar type K4.
Co-discovery of Hotest Planet Kelt-9b
- Asteroid (56439) 2000 GD52 & company
- KELT-21_b Co-Discovery