alf Tau b
Orbiting alf Tau
alf Tau b is an exoplanet orbiting the star alf Tau, discovered in 2015 using the Radial Velocity method.
Minimum Mass (M sin i)
2056.36
Earth masses
Orbital Period
629.0
days
Distance
20.4
parsecs
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
2056.36
Radial-velocity minimum
Equilibrium Temperature
Unknown
Parameter source: Hatzes et al. 2015
Orbital Period
628.960+0.900−0.900days
Semi-Major Axis
1.4600+0.2700−0.2700au
M sin(i) (Earth masses)
2056.36+168.45−168.45
M sin(i) (Jupiter masses)
6.4700+0.5300−0.5300
Eccentricity
0.1000+0.0500−0.0500
Epoch of Periastron
2451297.00+50.00−50.00days(JD)
Argument of Periastron
287.0+29.0−29.0deg
Radial Velocity Semi-Amplitude
142.10+7.20−7.20m/s
Distance from Earth
20.4 pc (~67 ly)
Spectral Type
K5 III
Temperature
4055 K
Mass (Solar)
1.13 M☉
Radius (Solar)
45.10 R☉
Luminosity
Unknown
Planets in System
1
Stars in System
2
Coordinates (RA, Dec)
68.9802°, 16.5092°
Discovery Method
Radial Velocity
Discovery Year
2015
Source ID: alf Tau b
alf Tau b orbits alf Tau and was reported in 2015 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 2,056.36 Earth masses (M sin i) and an orbital period of 628.96 days.
Catalog data places the system at about 20.4 parsecs from Earth, a host star classified as K5 III, 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 Tau