Star · K0 IV-V
HD 166724
HD 166724 is a subgiant star of spectral type K0 IV-V in the constellation Corona Australis, 148.0 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 89354 |
|---|---|
| Constellation | Corona Australis |
| Distance | 148.0 light-years (45.4 pc) |
| Apparent magnitude | magnitude 9.33 |
| Absolute magnitude | magnitude 6.05 |
| Spectral type | K0 IV-V |
| Surface temperature | 5,130 K |
| Luminosity | 0.31 L☉ |
| Radius | 0.797 R☉ |
| Mass | 0.81 M☉ |
| Age | 4.0 billion years |
| Metallicity [Fe/H] | -0.09 |
| Right ascension (J2000) | 18h 13m 59.7s |
| Declination (J2000) | −42° 34′ 31″ |
| Space velocity (relative to the Sun) | 25.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.33. Visible from the whole Southern Hemisphere and north to latitude 47° N. South of latitude 47° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1878. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around HD 166724, the Sun would look like a star of magnitude 8.11, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Planets
- HD 166724 b 5,140-day orbit · 13 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.