Star · G3 IV/V
HD 27631
HD 27631 is a subgiant star of spectral type G3 IV/V in the constellation Horologium, 163.7 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 20199 |
|---|---|
| Constellation | Horologium |
| Distance | 163.7 light-years (50.2 pc) |
| Apparent magnitude | magnitude 8.26 |
| Absolute magnitude | magnitude 4.76 |
| Spectral type | G3 IV/V |
| Surface temperature | 5,740 K |
| Luminosity | 0.879 L☉ |
| Radius | 0.923 R☉ |
| Mass | 0.944 M☉ |
| Age | 4.0 billion years |
| Metallicity [Fe/H] | -0.12 |
| Right ascension (J2000) | 4h 19m 45.5s |
| Declination (J2000) | −41° 57′ 37″ |
| Space velocity (relative to the Sun) | 31.8 km/s |
In the sky
Too faint for the naked eye (magnitude 8.26); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 48° N. South of latitude 48° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1862. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.9 million years.
The Sun seen from there
From a planet around HD 27631, the Sun would look like a star of magnitude 8.33, in the direction where our sky has the constellation Hercules. It would be invisible to the naked eye.
Planets
- HD 27631 b 2,200-day orbit · 13.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 18714 11.8 light-years
- HIP 19758 12.8 light-years
- HIP 19875 12.9 light-years
- HIP 19331 13.2 light-years
- HIP 21368 13.5 light-years
- HIP 22286 15.1 light-years
- HIP 20002 15.8 light-years
- DENIS-P J035726.9-441730 16.4 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.