Planet YZ Cet c

Name YZ Cet c
Planet Status Confirmed
Discovered in 2017
Mass 0.0031 (± 0.00044) MJ
Mass*sin(i) 0.0031 (± 0.00044) MJ
Semi-Major Axis 0.0209 (± 0.0007) AU
Orbital Period 3.06008 (± 0.00022) JD
Eccentricity 0.04 ( -0.04 +0.11 )
ω
Tperi
Radius
Inclination
Update 2017-08-15
Detection Method Radial Velocity
Mass Detection Method Radial Velocity
Radius Detection Method
Molecules
Primary transit
Secondary transit
λ
Impact Parameter b
Time Vr=0
Velocity Semiamplitude K 1.68 (± 0.23) m/s
Calculated temperature
Measured temperature
Hottest point longitude
Geometric albedo
Surface gravity log(g/gH)
Alternate Names

Star

YZ Cet
Name YZ Cet
Distance 3.6 pc
Spectral type M4.5
Apparent magnitude V 12.074
Mass 0.13 (± 0.013) MSun
Age 4.0 (± 0.6) Gyr +
Effective temperature 3056.0 (± 60.0) K
Radius 0.168 (± 0.009) RSun
Metallicity [Fe/H] -0.26 (± 0.08)
Detected Disc
Magnetic Field
RA2000 01:12:30.5
Dec2000 -16:59:56
Alternate Names
Planetary system
3 planets

More data


Related publications

The HARPS search for southern extra-solar planets XLII. A system of Earth-mass planets around the nearby M dwarf YZ Cet
2017 ASTUDILLO-DEFRU N., DIAZ R., BONFILS X., ALMENARA J., DELISLE J.-B. et al.
Astron. & Astrophys., in press
paper  arxiv  

The Age of the Nearest Multi-Planet System YZ Cet (GJ 54.1) Determined from Stellar Rotation and X-ray Emission
2017 ENGLE S. & GUINAN E.
Astron. Telegram, Atel # 10678
paper