Kepler-90
Star
Kepler-90 — a yellow-white star a little larger and hotter than the Sun (~1.2 solar masses and radii), ~2,770 light-years away in Draco. Ordinary in itself, it is remarkable for what orbits it: a full family of eight planets, the Solar System's equal.
Open in 3D viewSee Kepler-90 in the live, interactive 3D map
Key facts
Mass
2.39 × 10³⁰ kg
1.2 M☉
Radius
834,840 km
1.2× wider than the Sun
Surface temperature
6,080 K (5807 °C)
Spectral type
G-type dwarf (a little hotter and larger than the Sun)
Science
Physical
- Mass
- 2.39 × 10³⁰ kg · 1.2 M☉
- Radius
- 834,840 km · 1.2× wider than the Sun
- Density
- 979 kg/m³ · 0.98× water
- Spectral type
- G-type dwarf (a little hotter and larger than the Sun)
Composition
- By mass
- A yellow-white main-sequence star of about 1.2 solar masses and radii, hydrogen/helium like the Sun. Notable not for itself but for its full family of eight transiting planets — the only star known to tie the Sun's count.
Temperature
- Surface
- 6,080 K (5807 °C)
Radiation & temperature
- Luminosity
- 6.79 × 10²⁶ W · 1.77 L☉
- Surface temperature
- 6,080 K (5807 °C)
- Peak wavelength
- 477 nm · blue light
Discovery & history
- Name
- A Kepler-mission catalogue designation; no proper name.
Monitored by NASA's Kepler telescope, its light showed the tell-tale dips of many transiting planets; seven were confirmed by 2013 and an eighth by machine learning in 2017.
Images
Images from open archives · credit shown per image