YZ Ceti b
Planet· orbits the Sun
YZ Ceti b - the innermost and lightest of YZ Ceti's three planets (minimum mass ~0.7 Earth), on a 2-day orbit. Never imaged.
Open in 3D viewSee YZ Ceti b in the live, interactive 3D map
Key facts
Minimum mass
4.18 × 10²⁴ kg
0.7 M⊕
Year
2.02 Earth days
Distance from YZ Ceti
2,438,445 km
Science
Physical
- Minimum mass (m·sin i)
- 4.18 × 10²⁴ kg · 0.7 M⊕
- Radius
- Not measured
Orbital
- Semi-major axis
- 2,438,445 km
- Eccentricity
- 0.06
- Inclination
- 0.00 °
- Orbital period
- 2.0 days
- Perihelion
- 2,292,139 km
- Aphelion
- 2,584,752 km
- Mean orbital velocity
- 87.7 km/s
Composition
- Bulk composition
- Presumed rocky (minimum mass ~0.7 Earth); never imaged.
- Surface appearance
- Appearance based on ESO/M. Kornmesser's artist's concept. No spacecraft has imaged this world, so its real appearance is unknown — The surface shown is an artistic representation, shown only in Vision mode; Realism shows a plain spectral colour.
Radiation & temperature
- Insolation
- 8.28 S⊕ · 8.28× the sunlight Earth receives
- Equilibrium temperature
- 471 K (198 °C)
Discovery & history
- Method
- Radial-velocity detection (stellar wobble)
- Name
- Designated 'b' as the first planet found around its star, following the IAU convention of lettering planets in discovery order from 'b'.
One of three low-mass planets found by HARPS in 2017.
Images
No official imagery available — this object has never been visited and no officially-licensed depiction exists.