Star · F4V
HIP 28644
HIP 28644 is a main-sequence star of spectral type F4V in the constellation Auriga, 158.5 light-years from the Sun.
| Constellation | Auriga |
|---|---|
| Distance | 158.5 light-years (48.6 pc) |
| Apparent magnitude | magnitude 6.23 |
| Absolute magnitude | magnitude 2.80 |
| Spectral type | F4V |
| Surface temperature | 6,600 K |
| Luminosity | 6.49 L☉ |
| Radius | 1.95 R☉ |
| Mass | 1.6 M☉ (estimated) |
| Right ascension (J2000) | 6h 02m 55.2s |
| Declination (J2000) | +32° 38′ 08″ |
| Space velocity (relative to the Sun) | 61.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.23). Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° 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 1867. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around HIP 28644, the Sun would look like a star of magnitude 8.26, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 28502 2.99 light-years
- HIP 28445 12.0 light-years
- HIP 29882 14.3 light-years
- Mahasim 14.8 light-years
- HIP 29074 14.9 light-years
- HIP 28145 16.2 light-years
- HIP 26326 19.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.