alf Ari b
Orbiting alf Ari
alf Ari b is an exoplanet orbiting the star alf Ari, discovered in 2010 using the Radial Velocity method.
Minimum Mass (M sin i)
572.07
Earth masses
Orbital Period
380.8
days
Distance
20.2
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
572.07
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Lee et al. 2011
Orbital Period
380.800+0.300−0.300days
Semi-Major Axis
1.2000au
M sin(i) (Earth masses)
572.07+63.56−63.56
M sin(i) (Jupiter masses)
1.8000+0.2000−0.2000
Eccentricity
0.2500+0.0300−0.0300
Epoch of Periastron
2451213.52+7.36−7.36days
Argument of Periastron
89.2+6.8−6.8deg
Radial Velocity Semi-Amplitude
41.10+0.80−0.80m/s
Distance from Earth
20.2 pc (~66 ly)
Spectral Type
Unknown
Temperature
4553 K
Mass (Solar)
1.50 M☉
Radius (Solar)
13.90 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
1
Coordinates (RA, Dec)
31.7933°, 23.4624°
Discovery Method
Radial Velocity
Discovery Year
2010
Source ID: alf Ari b
alf Ari b orbits alf Ari and was reported in 2010 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 572.07 Earth masses (M sin i) and an orbital period of 380.8 days.
Catalog data places the system at about 20.2 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 alf Ari