HD 181433 b
Orbiting HD 181433
HD 181433 b is an exoplanet orbiting the star HD 181433, discovered in 2008 using the Radial Velocity method.
Minimum Mass (M sin i)
7.22
Earth masses
Orbital Period
9.4
days
Distance
26.9
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
7.22
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Standing et al. 2026
Orbital Period
9.374+0.000−0.000days
Semi-Major Axis
0.0828+0.0019−0.0020au
M sin(i) (Earth masses)
7.22+0.44−0.45
M sin(i) (Jupiter masses)
0.0227+0.0014−0.0014
Eccentricity
0.3960+0.0150−0.0240
Epoch of Periastron
2456470.15+0.10−0.19days(BJD)
Argument of Periastron
201.9+4.2−7.9deg
Radial Velocity Semi-Amplitude
2.65+0.09−0.12m/s
Distance from Earth
26.9 pc (~88 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
0.86 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
291.2874°, -66.4678°
Discovery Method
Radial Velocity
Discovery Year
2008
Source ID: HD 181433 b
HD 181433 b orbits HD 181433 and was reported in 2008 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 7.22 Earth masses (M sin i) and an orbital period of 9.37 days.
Catalog data places the system at about 26.9 parsecs from Earth and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 181433More planets in this system