Star · K2
HIP 4801
HIP 4801 is a supergiant star of spectral type K2 in the constellation Cetus, 304.5 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 304.5 light-years (93.4 pc) |
| Apparent magnitude | magnitude 6.47 |
| Absolute magnitude | magnitude 1.62 |
| Spectral type | K2 |
| Surface temperature | 4,340 K |
| Luminosity | 39.8 L☉ |
| Radius | 11.2 R☉ |
| Mass | 2.6 M☉ (estimated) |
| Right ascension (J2000) | 1h 01m 38.6s |
| Declination (J2000) | −16° 15′ 56″ |
| Space velocity (relative to the Sun) | 57.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.47). Visible from the whole Southern Hemisphere and north to latitude 74° N. South of latitude 74° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1722. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.4 million years.
The Sun seen from there
From a planet around HIP 4801, the Sun would look like a star of magnitude 9.68, in the direction where our sky has the constellation Coma Berenices. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 4506 8.91 light-years
- HIP 4774 11.0 light-years
- HIP 4951 14.9 light-years
- HIP 3948 19.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.