Star · K0
HD 42012
HD 42012 is a main-sequence star of spectral type K0 in the constellation Auriga, 119.8 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HIP 29242 |
|---|---|
| Constellation | Auriga |
| Distance | 119.8 light-years (36.7 pc) |
| Apparent magnitude | magnitude 8.44 |
| Absolute magnitude | magnitude 5.62 |
| Spectral type | K0 |
| Surface temperature | 5,410 K |
| Luminosity | 0.537 L☉ |
| Radius | 0.82 R☉ |
| Mass | 0.83 M☉ |
| Age | 4.1 billion years |
| Metallicity [Fe/H] | -0.09 |
| Right ascension (J2000) | 6h 09m 56.5s |
| Declination (J2000) | +34° 08′ 07″ |
| Space velocity (relative to the Sun) | 61.7 km/s |
In the sky
Too faint for the naked eye (magnitude 8.44); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 56° S. North of latitude 56° N it never sets. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1906. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around HD 42012, the Sun would look like a star of magnitude 7.65, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Planets
- HD 42012 b 858-day orbit · 13.5 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEA J062858.69+345249.2 8.70 light-years
- HIP 30944 14.9 light-years
- HIP 31143 16.3 light-years
- HIP 27527 17.4 light-years
- HIP 27528 18.5 light-years
- HIP 31568 18.6 light-years
- GJ 1091 18.9 light-years
- HIP 25580 19.3 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.