HIP 99770 b

HIP 99770 b
	Subaru Telescope detection of HIP 99770 b.
Discovery
Discovered by	Currie et al.
Discovery site	Subaru Telescope
Discovery date	November 30, 2022
Detection method	Direct imaging
Orbital characteristics
Semi-major axis	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 MJ
Temperature	1,400 K

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.

^ ^a ^b ^c ^d Cite error: The named reference Currie2022 was invoked but never defined (see the help page).
^ Andrew Jones (April 17, 2023). "Giant exoplanet found, imaged directly thanks to star-mapping data (photos)". Space.com.

[Currie2022-1] Cite error: The named reference Currie2022 was invoked but never defined (see the help page).

[2] Andrew Jones (April 17, 2023). "Giant exoplanet found, imaged directly thanks to star-mapping data (photos)". Space.com.

[1]

[2]

Discovery
Subaru Telescope detection of HIP 99770 b.
Discovered by	Currie et al.^[1]
Discovery site	Subaru Telescope
Discovery date	November 30, 2022
Detection method	Direct imaging
Orbital characteristics
Semi-major axis	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] `M`_J
Temperature	1,400 K^[1]

HIP 99770 b

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