HD 2638 b
Orbiting HD 2638
HD 2638 b is an exoplanet orbiting the star HD 2638, discovered in 2005 using the Radial Velocity method.
Minimum Mass (M sin i)
133.49
Earth masses
Orbital Period
3.4
days
Distance
55.0
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
133.49
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Stassun et al. 2017
Orbital Period
3.444+0.000−0.000days
Semi-Major Axis
0.0400+0.0000−0.0000au
M sin(i) (Earth masses)
133.49+9.53−9.53
M sin(i) (Jupiter masses)
0.4200+0.0300−0.0300
Eccentricity
0.0000
Radial Velocity Semi-Amplitude
67.40+0.40−0.40m/s
Distance from Earth
55.0 pc (~179 ly)
Spectral Type
Unknown
Temperature
5186 K
Mass (Solar)
0.77 M☉
Radius (Solar)
0.94 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
3
Coordinates (RA, Dec)
7.4990°, -5.7650°
Discovery Method
Radial Velocity
Discovery Year
2005
Source ID: HD 2638 b
HD 2638 b orbits HD 2638 and was reported in 2005 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 133.49 Earth masses (M sin i) and an orbital period of 3.44 days.
Catalog data places the system at about 55 parsecs from Earth 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 2638