Star · G0 V
HD 39091
HD 39091 is a subgiant star of spectral type G0 V in the constellation Mensa, 59.6 light-years from the Sun. It is orbited by 3 confirmed exoplanet(s).
| Other names | π Men · GJ 9189 · HIP 26394 |
|---|---|
| Constellation | Mensa |
| Distance | 59.6 light-years (18.3 pc) |
| Apparent magnitude | magnitude 5.65 |
| Absolute magnitude | magnitude 4.34 |
| Spectral type | G0 V |
| Surface temperature | 6,000 K |
| Luminosity | 1.44 L☉ |
| Radius | 1.19 R☉ |
| Mass | 1.07 M☉ |
| Age | 3.9 billion years |
| Metallicity [Fe/H] | 0.09 |
| Right ascension (J2000) | 5h 37m 09.0s |
| Declination (J2000) | −80° 28′ 09″ |
| Space velocity (relative to the Sun) | 95.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.65). Visible from the whole Southern Hemisphere and north to latitude 10° N. South of latitude 10° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1966. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around HD 39091, the Sun would look like a star of magnitude 6.14, in the direction where our sky has the constellation Ursa Minor. It would be visible to the naked eye.
Planets
- pi Men c 6.27-day orbit · 2.02 R⊕
- pi Men d 125-day orbit · 3.72 R⊕
- HD 39091 b 2,090-day orbit · 12.3 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISE J062842.71-805725.0 7.28 light-years
- GJ 1077 8.08 light-years
- WISEA J053512.01-773829.7 9.39 light-years
- 2MASS J06395596-7418446 9.44 light-years
- α Cha 9.87 light-years
- GJ 3492 12.1 light-years
- WISE J053516.80-750024.9 13.1 light-years
- GJ 3021 13.1 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.