Star · F6V
HATS-40
HATS-40 is a main-sequence star of spectral type F6V in the constellation Canis Major, 4,378 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Constellation | Canis Major |
|---|---|
| Distance | 4,378 light-years (1,342 pc) |
| Apparent magnitude | magnitude 13.48 |
| Absolute magnitude | magnitude 2.84 |
| Spectral type | F6V |
| Surface temperature | 6,460 K |
| Luminosity | 8 L☉ |
| Radius | 2.26 R☉ |
| Mass | 1.56 M☉ |
| Age | 2.1 billion years |
| Metallicity [Fe/H] | 0.01 |
| Right ascension (J2000) | 6h 42m 17.1s |
| Declination (J2000) | −29° 46′ 36″ |
| Space velocity (relative to the Sun) | 45.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.48. Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° S it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 4,378 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 78 million years.
The Sun seen from there
From a planet around HATS-40, the Sun would look like a star of magnitude 15.47, in the direction where our sky has the constellation Lyra. It would be invisible to the naked eye.
Planets
- HATS-40 b 3.26-day orbit · 17.7 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.