Star · G8IV
HIP 105390
HIP 105390 is a subgiant star of spectral type G8IV in the constellation Cygnus, 231.5 light-years from the Sun.
| Constellation | Cygnus |
|---|---|
| Distance | 231.5 light-years (71.0 pc) |
| Apparent magnitude | magnitude 6.45 |
| Absolute magnitude | magnitude 2.19 |
| Spectral type | G8IV |
| Surface temperature | 5,270 K |
| Luminosity | 14 L☉ |
| Radius | 4.48 R☉ |
| Mass | 1.93 M☉ (estimated) |
| Right ascension (J2000) | 21h 20m 50.1s |
| Declination (J2000) | +32° 27′ 09″ |
| Space velocity (relative to the Sun) | 38.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.45). Visible from the whole Northern Hemisphere and south to latitude 58° S. North of latitude 58° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1794. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.1 million years.
The Sun seen from there
From a planet around HIP 105390, the Sun would look like a star of magnitude 9.09, in the direction where our sky has the constellation Pyxis. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 104421 13.7 light-years
- HIP 106473 13.7 light-years
- TOI-1278 19.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.