![]() Subaru Telescope detection of HIP 99770 b. | |
Discovery | |
---|---|
Discovered by | Currie et al.[1] |
Discovery site | Subaru Telescope |
Discovery date | November 30, 2022 |
Direct imaging | |
Orbital characteristics | |
16.9+3.4 −1.9AU | |
Eccentricity | 0.25+0.14 −0.16 |
Inclination | 148+13 −11 |
Star | HIP 99770 |
Physical characteristics | |
Mass | 16.1+5.4 −5.0[1] MJ |
Temperature | 1,400 K[1] |
HIP 99770 b [1] is a directly imaged superjovian extrasolar planet orbiting the dusty A-type star HIP 99770 (29 Cygni), detected with Gaia/Hipparcos precision astrometry and high-contrast imaging.[2] HIP 99770 b is the first joint direct imaging + astrometric discovery of an extrasolar planet and the first planet discovered using precision astrometry from the Gaia mission.