Star · A
HIP 17797
HIP 17797 is a main-sequence star of spectral type A in the constellation Eridanus, 173.4 light-years from the Sun.
| Constellation | Eridanus |
|---|---|
| Distance | 173.4 light-years (53.2 pc) |
| Apparent magnitude | magnitude 4.30 |
| Absolute magnitude | magnitude 0.67 |
| Spectral type | A |
| Surface temperature | 10,630 K |
| Luminosity | 70.1 L☉ |
| Radius | 2.47 R☉ |
| Mass | 3.06 M☉ (estimated) |
| Right ascension (J2000) | 3h 48m 35.9s |
| Declination (J2000) | −37° 37′ 13″ |
| Space velocity (relative to the Sun) | 25.8 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.30). Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1853. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around HIP 17797, the Sun would look like a star of magnitude 8.46, in the direction where our sky has the constellation Corona Borealis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 17351 4.41 light-years
- HIP 17710 5.13 light-years
- HIP 17819 9.31 light-years
- HIP 18714 14.7 light-years
- HIP 16851 16.5 light-years
- HIP 20002 17.8 light-years
- HIP 18305 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.