BD+20 2457 b
Orbiting BD+20 2457
BD+20 2457 b is an exoplanet orbiting the star BD+20 2457, discovered in 2009 using the Radial Velocity method.
Minimum Mass (M sin i)
6807.63
Earth masses
Orbital Period
379.6
days
Distance
1539.7
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
6807.63
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Niedzielski et al. 2009
Orbital Period
379.630+2.010−2.010days
Semi-Major Axis
1.4500au
M sin(i) (Earth masses)
6807.63
M sin(i) (Jupiter masses)
21.4200
Eccentricity
0.1500+0.0300−0.0300
Epoch of Periastron
2454677.03+28.19−28.19days
Argument of Periastron
207.6+22.0−22.0deg
Radial Velocity Semi-Amplitude
322.35+9.57−9.57m/s
Distance from Earth
1539.7 pc (~5022 ly)
Spectral Type
K2 II
Temperature
4137 K
Mass (Solar)
2.80 M☉
Radius (Solar)
49.00 R☉
Luminosity
3.17 log L☉
Planets in System
2
Stars in System
1
Coordinates (RA, Dec)
154.1868°, 19.8913°
Discovery Method
Radial Velocity
Discovery Year
2009
Source ID: BD+20 2457 b
BD+20 2457 b orbits BD+20 2457 and was reported in 2009 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 6,807.63 Earth masses (M sin i) and an orbital period of 379.63 days.
Catalog data places the system at about 1,539.7 parsecs from Earth, a host star classified as K2 II, and 2 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open BD+20 2457More planets in this system