Kepler-90 b
Planet· orbits Kepler-90
Kepler-90 b — the innermost world, an Earth-size planet (1.31 R⊕) on a scorching 7-day orbit at over 1,000 K. Its size is measured (it transits); its mass is only size-estimated, so no density is quoted. Likely a hot rock. Never imaged.
Open in 3D viewSee Kepler-90 b in the live, interactive 3D map
Key facts
Radius
8,346 km
1.31× wider than Earth
Year
7.01 Earth days
Distance from Kepler-90
11,070,242 km
Science
Physical
- Radius
- 8,346 km · 1.31× wider than Earth
Orbital
- Semi-major axis
- 11,070,242 km
- From the NASA Exoplanet Archive (transit + orbit fit)
- Eccentricity
- 0
- From the NASA Exoplanet Archive (transit + orbit fit)
- Inclination
- 0.00 °
- From the NASA Exoplanet Archive (transit + orbit fit)
- Orbital period
- 7.0 days
- From the NASA Exoplanet Archive (transit + orbit fit)
- Perihelion
- 11,070,242 km
- Computed from the orbital elements
- Aphelion
- 11,070,242 km
- Computed from the orbital elements
- Mean orbital velocity
- 115 km/s
- Computed from the orbital elements
Composition
- Bulk composition
- Earth-size (1.31 R⊕) but scorching. Its size is measured from transit; its mass is only estimated from that size, so no density is quoted. Presumed rocky.
- Surface appearance
- Appearance based on NASA/JPL-Caltech'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 Visual mode; Realism shows a plain spectral colour.
Radiation & temperature
- Insolation
- 324 S⊕ · 324× the sunlight Earth receives
- Computed from Kepler-90's luminosity and the orbital distance (inverse-square; Earth's sunlight = 1).
- Equilibrium temperature
- 1,062 K (789 °C)
- NASA Exoplanet Archive model value (no atmosphere assumed) — computed, not measured.
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 the first seven planets confirmed around Kepler-90 (2013).
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.