Star · A1V
HIP 54477
HIP 54477 is a main-sequence star of spectral type A1V in the constellation Hydra, 178.1 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 178.1 light-years (54.6 pc) |
| Apparent magnitude | magnitude 5.43 |
| Absolute magnitude | magnitude 1.74 |
| Spectral type | A1V |
| Surface temperature | 9,340 K |
| Luminosity | 21.4 L☉ |
| Radius | 1.77 R☉ |
| Mass | 2.18 M☉ (estimated) |
| Right ascension (J2000) | 11h 08m 44.0s |
| Declination (J2000) | −28° 04′ 51″ |
| Space velocity (relative to the Sun) | 21.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.43). Visible from the whole Southern Hemisphere and north to latitude 62° N. South of latitude 62° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1848. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around HIP 54477, the Sun would look like a star of magnitude 8.52, in the direction where our sky has the constellation Pegasus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 53963 9.14 light-years
- HIP 54690 9.94 light-years
- HIP 54446 11.5 light-years
- HIP 55469 13.8 light-years
- HIP 52828 15.3 light-years
- HIP 53873 15.5 light-years
- HIP 54349 16.8 light-years
- HIP 52545 17.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.