Star · G9 V CN+1
HD 216770
HD 216770 is a main-sequence star of spectral type G9 V CN+1 in the constellation Piscis Austrinus, 119.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 113238 |
|---|---|
| Constellation | Piscis Austrinus |
| Distance | 119.5 light-years (36.6 pc) |
| Apparent magnitude | magnitude 8.11 |
| Absolute magnitude | magnitude 5.29 |
| Spectral type | G9 V CN+1 |
| Surface temperature | 5,400 K |
| Luminosity | 0.794 L☉ |
| Radius | 0.93 R☉ |
| Mass | 0.74 M☉ |
| Age | 3.1 billion years |
| Metallicity [Fe/H] | 0.27 |
| Right ascension (J2000) | 22h 55m 53.7s |
| Declination (J2000) | −26° 39′ 31″ |
| Space velocity (relative to the Sun) | 58.8 km/s |
In the sky
Too faint for the naked eye (magnitude 8.11); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 63° N. South of latitude 63° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1906. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around HD 216770, the Sun would look like a star of magnitude 7.65, in the direction where our sky has the constellation Leo Minor. It would be invisible to the naked eye.
Planets
- HD 216770 b 118-day orbit · 14.1 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 113221 7.97 light-years
- HIP 111746 8.39 light-years
- HIP 112648 11.1 light-years
- HIP 114746 11.4 light-years
- HIP 111698 13.8 light-years
- HIP 112524 14.2 light-years
- HIP 114135 15.5 light-years
- HIP 113579 16.0 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.