Star · G
HD 87646
HD 87646 is a subgiant star of spectral type G in the constellation Leo, 301.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 49522 |
|---|---|
| Constellation | Leo |
| Distance | 301.5 light-years (92.4 pc) |
| Apparent magnitude | magnitude 8.07 |
| Absolute magnitude | magnitude 3.24 |
| Spectral type | G |
| Surface temperature | 5,770 K |
| Luminosity | 9.11 L☉ |
| Radius | 1.55 R☉ |
| Mass | 1.12 M☉ |
| Metallicity [Fe/H] | -0.17 |
| Right ascension (J2000) | 10h 06m 40.8s |
| Declination (J2000) | +17° 53′ 43″ |
| Space velocity (relative to the Sun) | 39.7 km/s |
In the sky
Too faint for the naked eye (magnitude 8.07); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 72° S. North of latitude 72° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1724. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.3 million years.
The Sun seen from there
From a planet around HD 87646, the Sun would look like a star of magnitude 9.66, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Planets
- HD 87646 b 13.5-day orbit · 12.4 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 49622 7.91 light-years
- HIP 49168 14.6 light-years
- HIP 49869 17.2 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.