HD 4308 b

HD 4308 b is a low-mass exoplanet orbiting around HD 4308. It is believed to have almost no orbital eccentricity.^[1]

HD 4308 b

Artist's conception
Discovery
Discovered by	Udry et al.
Discovery site	California, United States
Discovery date	22 August 2005
Detection method	Doppler Spectroscopy
Orbital characteristics
Apastron	0.115 AU (17,200,000 km)
Periastron	0.115 AU (17,200,000 km)
Semi-major axis	0.115 ± 0.096 AU (17,200,000 ± 14,400,000 km)
Eccentricity	0.00 ± 0.01
Orbital period (sidereal)	15.56 ± 0.02 d 0.04260 y
Time of periastron	2,453,314.70 ±2.0
Argument of periastron	359±47
Semi-amplitude	4.07 ± 0.2
Star	HD 4308
Physical characteristics
Mass	>0.0442 MJ (>14 M🜨)

See also

• HD 4203 b
• HD 4208 b