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tau Cet g | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/tau Cet g

Confirmed exoplanet · Terrestrial

tau Cet g

Orbiting tau 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 tau Cet g — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,017
Method: Radial Velocity
Radius: 1.18 R⊕
Mass: 1.75 M⊕
Orbit: 20 days
Distance: 3.60304 pc

Planet profile

Orbit and physical properties

Orbital period: 20 days
Semi-major axis: 0.133 AU
Eccentricity: 0.06
Radius: 1.18 Earth radii
Mass: 1.75 Earth masses
Mass provenance: Msini
Density: 5.85 g/cm³
Equilibrium temperature: 639.65 K
Insolation: 27.9835 Earth flux

Host system

Star and system properties

Host star: tau Cet
Stars in system: 1
Known planets in system: 3
Spectral type: G8.5V
Stellar temperature: 5,310 K
Stellar radius: 0.83 R☉
Stellar mass: 0.783 M☉
Stellar metallicity: -0.52 dex
Stellar age: 12.12 Gyr
Distance: 3.60304 parsecs
Right ascension: 01h44m02.23s
Declination: -15d56m01.68s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,017
Publication date: 2017-10
Discovery locale: Ground
Facility: Multiple Observatories
Telescope: Multiple Telescopes
Instrument: Multiple Instruments
NASA Exoplanet Archive: Open composite record ↗

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