HD 39855 b
Orbiting HD 39855
HD 39855 b is an exoplanet orbiting the star HD 39855, discovered in 2019 using the Radial Velocity method.
Minimum Mass (M sin i)
8.50
Earth masses
Orbital Period
3.2
days
Distance
23.3
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
8.50
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Feng et al. 2019
Orbital Period
3.250+0.000−0.000days
Semi-Major Axis
0.0410+0.0010−0.0010au
M sin(i) (Earth masses)
8.50+1.50−1.50
M sin(i) (Jupiter masses)
0.0267+0.0047−0.0047
Eccentricity
0.1400+0.1100−0.1100
Argument of Periastron
103.0+79.8−79.8deg
Radial Velocity Semi-Amplitude
4.08+0.71−0.71m/s
Distance from Earth
23.3 pc (~76 ly)
Spectral Type
G8 V
Temperature
5576 K
Mass (Solar)
0.87 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
88.6261°, -19.7044°
Discovery Method
Radial Velocity
Discovery Year
2019
Source ID: HD 39855 b
HD 39855 b orbits HD 39855 and was reported in 2019 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 8.5 Earth masses (M sin i) and an orbital period of 3.25 days.
Catalog data places the system at about 23.3 parsecs from Earth, a host star classified as G8 V, and 1 known planet in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open HD 39855