Star · B3IV
HIP 115990
HIP 115990 is a subgiant star of spectral type B3IV in the constellation Cassiopeia, 667.6 light-years from the Sun.
| Constellation | Cassiopeia |
|---|---|
| Distance | 667.6 light-years (204.7 pc) |
| Apparent magnitude | magnitude 4.89 |
| Absolute magnitude | magnitude −1.67 |
| Spectral type | B3IV |
| Surface temperature | 11,960 K |
| Luminosity | 751 L☉ |
| Radius | 6.39 R☉ |
| Mass | 6.02 M☉ (estimated) |
| Right ascension (J2000) | 23h 30m 01.9s |
| Declination (J2000) | +58° 32′ 56″ |
| Space velocity (relative to the Sun) | 22.2 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.89). Visible from the whole Northern Hemisphere and south to latitude 31° S. North of latitude 31° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1358. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around HIP 115990, the Sun would look like a star of magnitude 11.39, in the direction where our sky has the constellation Centaurus. 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.