HAT-P-38b
HAT-P-38b (grey) compared to Jupiter. | |
| Discovery | |
|---|---|
| Discovered by | Sato et. al. (HATNet) |
| Discovery date | October 2012 |
| Transit | |
| Orbital characteristics | |
| Periastron | 0.04943 AU |
| Apoastron | 0.05519 AU |
| 0.05231+0.00085 −0.00089 AU | |
| Eccentricity | <0.055 |
| 4.6403288±0.0000011 d | |
| Inclination | 88.3°±0.7° |
| 240°±104° | |
| Semi-amplitude | 35.4±2.4 km/s |
| Star | HAT-P-38 |
| Physical characteristics | |
| 0.825+0.092 −0.063 RJ | |
| Mass | 0.267±0.020 MJ |
Mean density | 0.59 ± 0.16 g/cm3 |
| 9.77±0.26 m/s2 | |
| Temperature | 1,082 ± 55 K (808.9 ± 55.0 °C; 1,487.9 ± 99.0 °F) |
HAT-P-38b, formally named Hiisi, is a transiting exoplanet orbiting the G-type star HAT-P-38 821 light-years from the Solar System in the constellation Triangulum.