Star · G0
HD 74156
HD 74156 is a main-sequence star of spectral type G0 in the constellation Hydra, 187.2 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | HIP 42723 |
|---|---|
| Constellation | Hydra |
| Distance | 187.2 light-years (57.4 pc) |
| Apparent magnitude | magnitude 7.61 |
| Absolute magnitude | magnitude 3.82 |
| Spectral type | G0 |
| Surface temperature | 6,070 K |
| Luminosity | 2.52 L☉ |
| Radius | 1.51 R☉ |
| Mass | 1.1 M☉ |
| Age | 3.7 billion years |
| Metallicity [Fe/H] | 0.13 |
| Right ascension (J2000) | 8h 42m 25.1s |
| Declination (J2000) | +4° 34′ 41″ |
| Space velocity (relative to the Sun) | 55.1 km/s |
In the sky
Too faint for the naked eye (magnitude 7.61); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 85° S. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1839. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around HD 74156, the Sun would look like a star of magnitude 8.62, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Planets
- HD 74156 b 51.6-day orbit · 13.5 R⊕
- HD 74156 c 2,450-day orbit · 12.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 10 Hya 9.65 light-years
- SDSS J083646.35+052642.6 10.9 light-years
- δ Hya 11.5 light-years
- ULAS J084743.93+035040.2 12.1 light-years
- ULAS J085139.03+005340.9 15.3 light-years
- HIP 42084 17.3 light-years
- ULAS J083756.19-004156.0 17.8 light-years
- HIP 42396 18.7 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.