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YZ Cet b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/YZ Cet b

Confirmed exoplanet · Terrestrial

YZ Cet b

Orbiting YZ Cet

Discovered in 2017 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic terrestrial catalog artwork; not a direct image of YZ Cet b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,017
Method: Radial Velocity
Radius: 0.913 R⊕
Mass: 0.7 M⊕
Orbit: 2.02087 days
Distance: 3.71207 pc

Planet profile

Orbit and physical properties

Orbital period: 2.02087 days
Semi-major axis: 0.01634 AU
Eccentricity: 0.06
Radius: 0.913 Earth radii
Mass: 0.7 Earth masses
Mass provenance: Msini
Density: 5.05 g/cm³
Equilibrium temperature: 471.2 K
Insolation: 8.21 Earth flux

Host system

Star and system properties

Host star: YZ Cet
Stars in system: 1
Known planets in system: 3
Spectral type: M4.5 V
Stellar temperature: 3,151 K
Stellar radius: 0.157 R☉
Stellar mass: 0.142 M☉
Stellar metallicity: -0.18 dex
Stellar age: 3.8 Gyr
Distance: 3.71207 parsecs
Right ascension: 01h12m31.94s
Declination: -16d59m46.48s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,017
Publication date: 2017-09
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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