Star · B9II
HIP 85409
HIP 85409 is a bright giant star of spectral type B9II in the constellation Ara, 3,184 light-years from the Sun.
| Constellation | Ara |
|---|---|
| Distance | 3,184 light-years (976.2 pc) |
| Apparent magnitude | magnitude 5.90 |
| Absolute magnitude | magnitude −4.05 |
| Spectral type | B9II |
| Surface temperature | 9,400 K |
| Luminosity | 4,480 L☉ |
| Radius | 25.2 R☉ |
| Mass | 10 M☉ (estimated) |
| Right ascension (J2000) | 17h 27m 12.5s |
| Declination (J2000) | −50° 37′ 49″ |
| Space velocity (relative to the Sun) | 18.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.90). Visible from the whole Southern Hemisphere and north to latitude 39° N. South of latitude 39° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1159 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 56 million years.
The Sun seen from there
From a planet around HIP 85409, the Sun would look like a star of magnitude 14.78, in the direction where our sky has the constellation Auriga. 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.