YZ Cet b
Orbiting YZ Cet
YZ Cet b is an exoplanet orbiting the star YZ Cet, discovered in 2017 using the Radial Velocity method.
Minimum Mass (M sin i)
0.70
Earth masses
Orbital Period
2.0
days
Distance
3.7
parsecs
Equilibrium Temp
471
K
Radius (Earth radii)
Unknown
Minimum Mass, M sin(i) (Earth masses)
0.70
Radial-velocity minimum
Equilibrium Temperature
471 K
Parameter source: Stock et al. 2020
Orbital Period
2.021+0.000−0.000days
Semi-Major Axis
0.0163+0.0003−0.0004au
M sin(i) (Earth masses)
0.70+0.09−0.08
M sin(i) (Jupiter masses)
0.0022+0.0003−0.0003
Eccentricity
0.0600+0.0600−0.0400
Epoch of Periastron
2452996.25+0.21−0.17days(BJD)
Argument of Periastron
197.0+110.0−133.0deg
Radial Velocity Semi-Amplitude
1.31+0.15−0.14m/s
Distance from Earth
3.7 pc (~12 ly)
Spectral Type
M4.5 V
Temperature
3151 K
Mass (Solar)
0.14 M☉
Radius (Solar)
0.16 R☉
Luminosity
-2.66 log L☉
Planets in System
3
Stars in System
1
Coordinates (RA, Dec)
18.1331°, -16.9962°
Discovery Method
Radial Velocity
Discovery Year
2017
Source ID: YZ Cet b
YZ Cet b orbits YZ Cet and was reported in 2017 and was detected with the Radial Velocity method.
Published measurements list a minimum mass of 0.7 Earth masses (M sin i), an orbital period of 2.02 days, and an equilibrium temperature near 471 K.
Catalog data places the system at about 3.7 parsecs from Earth, a host star classified as M4.5 V, and 3 known planets in the system.
Host star
Explore the stellar record for this system to compare temperature, spectral type, and known planets.
Open YZ Cet