Star · G5V
HD 90156
HD 90156 is a main-sequence star of spectral type G5V in the constellation Hydra, 71.6 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | GJ 3597 · HIP 50921 |
|---|---|
| Constellation | Hydra |
| Distance | 71.6 light-years (21.9 pc) |
| Apparent magnitude | magnitude 6.92 |
| Absolute magnitude | magnitude 5.21 |
| Spectral type | G5V |
| Surface temperature | 5,600 K |
| Luminosity | 0.72 L☉ |
| Radius | 0.92 R☉ |
| Mass | 0.84 M☉ |
| Age | 4.4 billion years |
| Metallicity [Fe/H] | -0.24 |
| Right ascension (J2000) | 10h 23m 55.3s |
| Declination (J2000) | −29° 38′ 44″ |
| Space velocity (relative to the Sun) | 29.1 km/s |
In the sky
Too faint for the naked eye (magnitude 6.92); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° S 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 1954. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around HD 90156, the Sun would look like a star of magnitude 6.54, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Planets
- HD 90156 b 49.8-day orbit · 4.43 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- DENIS J1019245-270717 5.36 light-years
- Gl 385.1 5.37 light-years
- GJ 3615 5.51 light-years
- GJ 3620 9.05 light-years
- GJ 3634 10.5 light-years
- GJ 3608A 11.3 light-years
- WISEA J102313.22-315126.7 13.6 light-years
- HIP 51928 13.8 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.