7 CMa is 64.6 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this K1III(+M) star; the first was found in 2011 by radial velocity (Anglo-Australian Telescope).
Fly there in 3D7 CMa c takes 996.0 days to go round its star once.
| Spectral type | K1III(+M) |
| Surface temperature | 4,826 K |
| Mass | 1.34 solar masses |
| Radius | 4.87 solar radii |
| Luminosity | 11.55 times the Sun |
| Apparent magnitude | 3.95 |
| Age | about 4.3 billion years |
| Distance from the Sun | 64.6 light-years (19.8 parsecs) |
| Position (J2000) | RA 99.1713°, Dec -19.2562° |
| Constellation | Canis Major |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| 7 CMa b | 735.1 days | 1.758 AU | 13.4 R⊕ estimated | 587.99 M⊕ estimated | Radial Velocity, 2011 |
| 7 CMa c | 996.0 days | 2.153 AU | 13.9 R⊕ estimated | 276.51 M⊕ estimated | Radial Velocity, 2019 |
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 4,826 K, 12 times as bright as the Sun, the habitable zone, where starlight could keep water liquid on a rocky surface, runs from about 3.40 to 6.19 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 65 years ago, within living memory.