HD 153557 b
Orbiting HD 153557
HD 153557 b is an exoplanet orbiting the star HD 153557, discovered in 2022 using the Radial Velocity method.
Minimum Mass (M sin i)
20.34
Earth masses
Orbital Period
7.3
days
Distance
17.9
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
20.34
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Feng et al. 2022
Orbital Period
7.299+0.000−0.000days
Semi-Major Axis
0.0680+0.0030−0.0030au
M sin(i) (Earth masses)
20.34+1.91−2.22
M sin(i) (Jupiter masses)
0.0640+0.0060−0.0070
Eccentricity
0.0650+0.0530−0.0370
Epoch of Periastron
2450546.25+0.06−0.07days(BJD)
Argument of Periastron
142.0+15.3−17.5deg
Radial Velocity Semi-Amplitude
7.83+0.55−0.65m/s
Distance from Earth
17.9 pc (~59 ly)
Spectral Type
Unknown
Temperature
Unknown
Mass (Solar)
0.79 M☉
Radius (Solar)
Unknown
Luminosity
Unknown
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
254.4707°, 47.3679°
Discovery Method
Radial Velocity
Discovery Year
2022
Source ID: HD 153557 b
HD 153557 b orbits HD 153557 and was reported in 2022 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 20.34 Earth masses (M sin i) and an orbital period of 7.3 days.
Catalog data places the system at about 17.9 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 153557More planets in this system