BD+20 2457 c
Orbiting BD+20 2457
BD+20 2457 c is an exoplanet orbiting the star BD+20 2457, discovered in 2009 using the Radial Velocity method.
Minimum Mass (M sin i)
3963.17
Earth masses
Orbital Period
622.0
days
Distance
1539.7
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
3963.17
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Niedzielski et al. 2009
Orbital Period
621.990+10.200−10.200days
Semi-Major Axis
2.0100au
M sin(i) (Earth masses)
3963.17
M sin(i) (Jupiter masses)
12.4700
Eccentricity
0.1800+0.0600−0.0600
Epoch of Periastron
2453866.95+27.99−27.99days
Argument of Periastron
126.0+16.5−16.5deg
Radial Velocity Semi-Amplitude
160.03+7.21−7.21m/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 c
BD+20 2457 c orbits BD+20 2457 and was reported in 2009 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 3,963.17 Earth masses (M sin i) and an orbital period of 621.99 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