HD 77946 is 324 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this F5 star; the first was found in 2024 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DHD 77946 b goes round its star every 6.53 days, 13 times as often as Mercury goes round the Sun.
| Spectral type | F5 |
| Surface temperature | 6,007 K |
| Mass | 1.1973 solar masses |
| Radius | 1.3174 solar radii |
| Luminosity | 2.036 times the Sun |
| Apparent magnitude | 8.99 |
| Age | about 3.1 billion years |
| Distance from the Sun | 324.4 light-years (99.5 parsecs) |
| Position (J2000) | RA 136.7776°, Dec 46.6724° |
| Constellation | Ursa Major |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| HD 77946 b | 6.53 days | 0.0730 AU | 2.8965 R⊕ | 10.9 M⊕ | Transit, 2024 |
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.