HD 1397 b
Orbiting HD 1397
HD 1397 b is an exoplanet orbiting the star HD 1397, discovered in 2018 using the Transit method. It is a Jupiter-sized world.
Radius
11.50
Earth radii
Mass
131.90
Earth masses
Orbital Period
11.5
days
Distance
79.6
parsecs
Equilibrium Temp
1228
K
Radius (Earth radii)
11.50
Mass (Earth masses)
131.90
Measured
Equilibrium Temperature
1228 K
Parameter source: Nielsen et al. 2019
Orbital Period
11.535+0.001−0.001days
Semi-Major Axis
0.1097+0.0011−0.0013au
Planet Mass (Earth masses)
131.90+6.36−6.36
Planet Mass (Jupiter masses)
0.4150+0.0200−0.0200
Eccentricity
0.2510+0.0200−0.0190
Argument of Periastron
2.1+6.1−7.0deg
Radial Velocity Semi-Amplitude
32.00+1.40−1.40m/s
Distance from Earth
79.6 pc (~260 ly)
Spectral Type
Unknown
Temperature
5521 K
Mass (Solar)
1.32 M☉
Radius (Solar)
2.34 R☉
Luminosity
0.66 log L☉
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
4.4472°, -66.3589°
Discovery Method
Transit
Discovery Year
2018
Source ID: HD 1397 b
HD 1397 b orbits HD 1397 and was reported in 2018 and was detected with the Transit method.
Published measurements list a radius of 11.5 Earth radii, a mass of 131.9 Earth masses, an orbital period of 11.54 days, and an equilibrium temperature near 1,228 K.
Catalog data places the system at about 79.6 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 1397