HD 202772 Ab is a hot Jupiter orbiting the brighter component of the visual binary star HD 202772, located in the constellation Capricornus at a distance of about 480 light-years from Earth. The discovery was announced on 5 October 2018. HD 202772 Ab orbits its host star once every 3.3 days. It is an inflated hot Jupiter, and a rare example of hot Jupiters around evolved stars. It is also one of the most strongly irradiated planets known, with an equilibrium temperature of 2,100 K (1,830 °C; 3,320 °F).[1]
| Discovery | |
|---|---|
| Discovered by | TESS |
| Discovery date | 2019 |
| Transit | |
| Orbital characteristics | |
| 0.05208 AU | |
| Eccentricity | 0.04 |
| 3.3 d | |
| Star | HD 202772 A |
| Physical characteristics | |
| 1.545 RJ | |
| Mass | 1.017 MJ |
| Temperature | 2,100 K (1,830 °C; 3,320 °F) |
References
edit- ^ Wang, Songhu; et al. (October 5, 2018). "HD 202772 Ab: A Transiting Hot Jupiter Around A Bright, Mildly Evolved Star In A Visual Binary Discovered By Tess". The Astronomical Journal. 157 (2): 51. arXiv:1810.02341. doi:10.3847/1538-3881/aaf1b7. S2CID 59499230.