Kepler-11 b
Planet· orbits Kepler-11
Kepler-11 b — the innermost planet (1.8 R⊕), on a hot 10-day orbit. Its TTV-measured mass (~1.9 M⊕) gives a real density, suggesting a rocky core wrapped in light gases. Never imaged.
Open in 3D viewSee Kepler-11 b in the live, interactive 3D map
Key facts
Mass
1.13 × 10²⁵ kg
1.9 M⊕
Radius
11,468 km
1.8× wider than Earth
Surface gravity
5.76 m/s²
59% of Earth's gravity
Year
10.3 Earth days
Distance from Kepler-11
13,613,406 km
Science
Physical
- Mass
- 1.13 × 10²⁵ kg · 1.9 M⊕
- Radius
- 11,468 km · 1.8× wider than Earth
- Density
- 1,796 kg/m³ · 1.8× water
- Computed from mass and radius
- Surface gravity
- 5.76 m/s² · 59% of Earth's gravity
- Computed from mass and radius
- Escape velocity
- 11.5 km/s
- Computed from mass and radius
Orbital
- Semi-major axis
- 13,613,406 km
- From the NASA Exoplanet Archive (transit + orbit fit)
- Eccentricity
- 0.045
- From the NASA Exoplanet Archive (transit + orbit fit)
- Inclination
- 0.00 °
- From the NASA Exoplanet Archive (transit + orbit fit)
- Orbital period
- 10.3 days
- From the NASA Exoplanet Archive (transit + orbit fit)
- Perihelion
- 13,000,803 km
- Computed from the orbital elements
- Aphelion
- 14,226,010 km
- Computed from the orbital elements
- Mean orbital velocity
- 96.1 km/s
- Computed from the orbital elements
Composition
- Cloud appearance
- Appearance based on NASA/JPL-Caltech's artist's concept. No spacecraft has imaged this world, so its real appearance is unknown — The banded clouds shown are a representation of its class, shown only in Visual mode; Realism shows a plain spectral colour.
Radiation & temperature
- Insolation
- 127 S⊕ · 127× the sunlight Earth receives
- Computed from Kepler-11's luminosity and the orbital distance (inverse-square; Earth's sunlight = 1).
Discovery & history
- Method
- Transit detection
- Name
- Designated 'b' under the IAU convention that letters a star's planets 'b', 'c', 'd'... in the order found (the star is the unwritten 'a'); no IAU proper name has been assigned.
One of six planets announced around Kepler-11 in 2011.
Images
No telescope has imaged this world — it is known only from the tiny dip it makes crossing its star. Only its host system has been pictured (see the system view); its true surface appearance is unknown.