Star · K0
Kamuy
Kamuy is a giant star of spectral type K0 in the constellation Corona Borealis, 441.5 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | HD 145457 · HIP 79219 |
|---|---|
| Constellation | Corona Borealis |
| Distance | 441.5 light-years (135.4 pc) |
| Apparent magnitude | magnitude 6.57 |
| Absolute magnitude | magnitude 0.91 |
| Spectral type | K0 |
| Surface temperature | 4,760 K |
| Luminosity | 45.2 L☉ |
| Radius | 9.9 R☉ |
| Mass | 1.9 M☉ |
| Age | 2.6 billion years |
| Metallicity [Fe/H] | -0.14 |
| Right ascension (J2000) | 16h 10m 03.9s |
| Declination (J2000) | +26° 44′ 34″ |
| Space velocity (relative to the Sun) | 26.6 km/s |
In the sky
Too faint for the naked eye (magnitude 6.57); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1584. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 7.8 million years.
The Sun seen from there
From a planet around Kamuy, the Sun would look like a star of magnitude 10.49, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Planets
- HD 145457 b 176-day orbit · 13.2 R⊕
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.