Star · G0II
HIP 39958
HIP 39958 is a bright giant star of spectral type G0II in the constellation Cancer, 1,128 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 1,128 light-years (345.7 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude −1.22 |
| Spectral type | G0II |
| Surface temperature | 5,270 K |
| Luminosity | 327 L☉ |
| Radius | 21.7 R☉ |
| Mass | 4.75 M☉ (estimated) |
| Right ascension (J2000) | 8h 09m 35.2s |
| Declination (J2000) | +29° 05′ 35″ |
| Space velocity (relative to the Sun) | 28.7 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° N it never sets. 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 898. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 20 million years.
The Sun seen from there
From a planet around HIP 39958, the Sun would look like a star of magnitude 12.52, in the direction where our sky has the constellation Sagittarius. 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.