HD 4313 b

HD 4313 b
	An artist's impression of HD 4313 b orbiting its parent star.
Discovery
Discovered by	Johnson et al.
Discovery site	Keck Observatory
Discovery date	2010-03-17
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	1.157±0.097 AU
Eccentricity	0.147±0.047
Orbital period (sidereal)	356.21±0.88 d
Time of perihelion	2454816±12 JD
Argument of perihelion	102±13 º
Semi-amplitude	40.3±1.7 m/s
Star	HD 4313
Physical characteristics
Mean radius	~1.2 RJ
Mass	≥1.927±0.090 MJ
Surface gravity	69.25 m/s2
Temperature	479.9 K (206.8 °C; 404.1 °F)

HD 4313 b is an extrasolar planet orbiting the K-type star HD 4313 approximately 447 light years away in the constellation Pisces.^[1] This planet was discovered using the Doppler spectroscopy (radial velocity) method.

^ ^a ^b Cite error: The named reference Johnson2010 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Luhn2019 was invoked but never defined (see the help page).

Discovery^[1]
An artist's impression of HD 4313 b orbiting its parent star.
Discovered by	Johnson et al.
Discovery site	Keck Observatory
Discovery date	2010-03-17
Detection method	Doppler spectroscopy
Orbital characteristics^[2]
Semi-major axis	1.157±0.097 AU
Eccentricity	0.147±0.047
Orbital period (sidereal)	356.21±0.88 d
Time of perihelion	2454816±12 JD
Argument of perihelion	102±13 º
Semi-amplitude	40.3±1.7 m/s
Star	HD 4313
Physical characteristics
Mean radius	~1.2 R_J
Mass	≥1.927±0.090 M_J^[2]
Surface gravity	69.25 m/s²
Temperature	479.9 K (206.8 °C; 404.1 °F)