Star · A5
HIP 77390
HIP 77390 is a main-sequence star of spectral type A5 in the constellation Triangulum Australe, 350.5 light-years from the Sun.
| Constellation | Triangulum Australe |
|---|---|
| Distance | 350.5 light-years (107.5 pc) |
| Apparent magnitude | magnitude 5.54 |
| Absolute magnitude | magnitude 0.38 |
| Spectral type | A5 |
| Surface temperature | 7,930 K |
| Luminosity | 63 L☉ |
| Radius | 4.21 R☉ |
| Mass | 2.97 M☉ (estimated) |
| Right ascension (J2000) | 15h 47m 53.1s |
| Declination (J2000) | −65° 26′ 33″ |
| Space velocity (relative to the Sun) | 37.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.54). Visible from the whole Southern Hemisphere and north to latitude 25° N. South of latitude 25° S it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1675. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.2 million years.
The Sun seen from there
From a planet around HIP 77390, the Sun would look like a star of magnitude 9.99, in the direction where our sky has the constellation Camelopardalis. 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.