Kepler-90 h
Planet· orbits the Sun
Kepler-90 h — the outermost planet, a Jupiter-size giant (11.3 R⊕) on a 332-day orbit near where Earth sits in our own system. Its measured mass (~203 M⊕) gives a real density somewhat below Jupiter's. The system's giant, it anchors the 'other solar system'. Never imaged.
Open in 3D viewSee Kepler-90 h in the live, interactive 3D map
Key facts
Mass
1.21 × 10²⁷ kg
0.639 M♃ (203 M⊕)
Radius
71,992 km
11.3× wider than Earth
Surface gravity
15.6 m/s²
1.59× Earth's
Year
332 Earth days
0.91 Earth years
Distance from Kepler-90
0.971 AU
Science
Physical
- Mass
- 1.21 × 10²⁷ kg · 0.639 M♃ (203 M⊕)
- Radius
- 71,992 km · 11.3× wider than Earth
- Density
- 776 kg/m³ · 0.78× water
- Surface gravity
- 15.6 m/s² · 1.59× Earth's
- Escape velocity
- 47.4 km/s · 4.24× Earth's
Orbital
- Semi-major axis
- 0.971 AU
- Eccentricity
- 0.0276
- Inclination
- 0.00 °
- Orbital period
- 331.6 days
- Perihelion
- 0.944 AU
- Aphelion
- 0.997 AU
- Mean orbital velocity
- 31.8 km/s
Composition
- Bulk composition
- A Jupiter-size giant (11.3 R⊕) with a measured mass (~203 M⊕) from transit timing, giving a real density somewhat below Jupiter's. The system's anchor, near where Earth sits in ours. Mass: Shaw et al. 2025; radius: Cabrera et al. 2014.
- 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 Vision mode; Realism shows a plain spectral colour.
Radiation & temperature
- Insolation
- 1.88 S⊕ · 1.88× the sunlight Earth receives
- Equilibrium temperature
- 294 K (21 °C)
Discovery & history
- Method
- Transit detection
- Name
- Designated 'h' 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.
The outermost of Kepler-90's eight planets, confirmed in 2013. Its mass is measured from transit-timing variations (Shaw et al. 2025); the radius is the Kepler discovery value (Cabrera et al. 2014, adopted by Shaw).
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.