Star · G
HD 217107
HD 217107 is a subgiant star of spectral type G in the constellation Pisces, 65.5 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 113421 |
|---|---|
| Constellation | Pisces |
| Distance | 65.5 light-years (20.1 pc) |
| Apparent magnitude | magnitude 6.17 |
| Absolute magnitude | magnitude 4.66 |
| Spectral type | G |
| Surface temperature | 5,620 K |
| Luminosity | 1.25 L☉ |
| Radius | 1.22 R☉ |
| Mass | 1.05 M☉ |
| Age | 11.9 billion years |
| Metallicity [Fe/H] | 0.37 |
| Right ascension (J2000) | 22h 58m 15.6s |
| Declination (J2000) | −2° 23′ 43″ |
| Space velocity (relative to the Sun) | 13.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.17). Visible from the whole Southern Hemisphere and north to latitude 88° N. 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 1960. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around HD 217107, the Sun would look like a star of magnitude 6.34, in the direction where our sky has the constellation Leo. It would be visible to the naked eye.
Planets
- HD 217107 b 7.13-day orbit · 13.6 R⊕
- HD 217107 c 5,140-day orbit · 12.9 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4302 3.66 light-years
- GJ 4294 5.94 light-years
- WISE J230133.32+021635.0 7.34 light-years
- HD 215152 8.11 light-years
- GJ 4284 9.90 light-years
- GJ 4314 10.9 light-years
- ULAS J232600.40+020139.2 11.1 light-years
- GJ 4329 11.6 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.