Star · K2
HIP 30420
HIP 30420 is a supergiant star of spectral type K2 in the constellation Canis Major, 1,767 light-years from the Sun.
| Constellation | Canis Major |
|---|---|
| Distance | 1,767 light-years (541.8 pc) |
| Apparent magnitude | magnitude 6.27 |
| Absolute magnitude | magnitude −2.40 |
| Spectral type | K2 |
| Surface temperature | 3,740 K |
| Luminosity | 3,070 L☉ |
| Radius | 132 R☉ |
| Mass | 9.01 M☉ (estimated) |
| Right ascension (J2000) | 6h 23m 46.1s |
| Declination (J2000) | −15° 04′ 17″ |
| Space velocity (relative to the Sun) | 38.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.27). Visible from the whole Southern Hemisphere and north to latitude 75° N. South of latitude 75° S 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 259. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 31 million years.
The Sun seen from there
From a planet around HIP 30420, the Sun would look like a star of magnitude 13.50, in the direction where our sky has the constellation Hercules. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.