Star · G8 V
HD 171238
HD 171238 is a main-sequence star of spectral type G8 V in the constellation Sagittarius, 145.1 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 91085 |
|---|---|
| Constellation | Sagittarius |
| Distance | 145.1 light-years (44.5 pc) |
| Apparent magnitude | magnitude 8.61 |
| Absolute magnitude | magnitude 5.37 |
| Spectral type | G8 V |
| Surface temperature | 5,470 K |
| Luminosity | 0.627 L☉ |
| Radius | 1.01 R☉ |
| Mass | 0.92 M☉ |
| Age | 7.0 billion years |
| Metallicity [Fe/H] | 0.20 |
| Right ascension (J2000) | 18h 34m 43.7s |
| Declination (J2000) | −28° 04′ 20″ |
| Space velocity (relative to the Sun) | 32.1 km/s |
In the sky
Too faint for the naked eye (magnitude 8.61); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° 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 1881. 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 171238, the Sun would look like a star of magnitude 8.07, in the direction where our sky has the constellation Auriga. It would be invisible to the naked eye.
Planets
- HD 171238 b 1,520-day orbit · 12.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 90213 7.74 light-years
- HIP 90596 12.2 light-years
- HIP 90212 13.5 light-years
- HIP 90397 14.6 light-years
- HIP 90451 15.5 light-years
- HIP 93639 16.9 light-years
- Kaus Australis 17.0 light-years
- HIP 88937 18.3 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.