Kepler-278 is 1,445 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this K2 III-IV star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-278 b goes round its star every 30.2 days, 2.9 times as often as Mercury goes round the Sun.
| Spectral type | K2 III-IV |
| Surface temperature | 4,965 K |
| Mass | 1.227 solar masses |
| Radius | 2.861 solar radii |
| Luminosity | 4.46 times the Sun |
| Apparent magnitude | 11.811 |
| Age | about 5.761 billion years |
| Distance from the Sun | 1445.0 light-years (443.0 parsecs) |
| Position (J2000) | RA 290.1072°, Dec 38.7023° |
| Constellation | Lyra |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-278 b | 30.2 days | 0.202 AU | 3.955 R⊕ | 56 M⊕ | Transit, 2014 |
| Kepler-278 c | 51.1 days | 0.287 AU | 3.268 R⊕ | 34.9 M⊕ | Transit, 2014 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.
For a star of 4,965 K, 4.5 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 2.10 to 3.80 AU. None of its known planets orbits inside it. The zone says how much starlight arrives, not whether a planet has water or air. The edges follow Kopparapu et al. (2014), as the 3D view draws them.
The light you see left 1,445 years ago, around AD 580.