Star · G0V
HR 810
HR 810 is a subgiant star of spectral type G0V in the constellation Horologium, 56.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | ι Hor · Gl 108 · HIP 12653 |
|---|---|
| Constellation | Horologium |
| Distance | 56.6 light-years (17.4 pc) |
| Apparent magnitude | magnitude 5.40 |
| Absolute magnitude | magnitude 4.20 |
| Spectral type | G0V |
| Surface temperature | 6,170 K |
| Luminosity | 1.79 L☉ |
| Radius | 1.13 R☉ |
| Mass | 1.34 M☉ |
| Age | 2.7 billion years |
| Metallicity [Fe/H] | 0.16 |
| Right ascension (J2000) | 2h 42m 33.4s |
| Declination (J2000) | −50° 48′ 01″ |
| Space velocity (relative to the Sun) | 37.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.40). Visible from the whole Southern Hemisphere and north to latitude 39° N. South of latitude 39° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1969. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around HR 810, the Sun would look like a star of magnitude 6.03, in the direction where our sky has the constellation Boötes. It would be visible to the naked eye.
Planets
- HR 810 b 303-day orbit · 12.7 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISE J030919.67-501614.3 5.78 light-years
- χ Eri 7.33 light-years
- Gl 81B 7.33 light-years
- GJ 1049 7.39 light-years
- WISEA J030237.52-581740.3 8.07 light-years
- Gl 140.1B 9.29 light-years
- Gl 140.1A 9.30 light-years
- HD 10647 9.50 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.