Kepler-273 is 2,329 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this 5,626 K star; the first was found in 2014 by transit (Kepler).
Fly there in 3DKepler-273 b goes round its star every 2.94 days, 30 times as often as Mercury goes round the Sun.
| Surface temperature | 5,626 K |
| Mass | 0.756 solar masses |
| Radius | 0.815 solar radii |
| Luminosity | 0.456 times the Sun |
| Apparent magnitude | 15.1 |
| Age | about 10.47 billion years |
| Distance from the Sun | 2328.6 light-years (714.0 parsecs) |
| Position (J2000) | RA 291.3021°, Dec 47.6977° |
| Constellation | Cygnus |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| Kepler-273 b | 2.94 days | 0.0370 AU | 1.5 R⊕ | 2.86 M⊕ estimated | Transit, 2014 |
| Kepler-273 c | 8.01 days | 0.0730 AU | 1.98 R⊕ | 4.58 M⊕ estimated | 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 5,626 K, 0.46 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 0.65 to 1.15 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 2,329 years ago, around 300 BC.