Star · F9V
HIP 40858
HIP 40858 is a main-sequence star of spectral type F9V in the constellation Hydra, 124.2 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 124.2 light-years (38.1 pc) |
| Apparent magnitude | magnitude 6.18 |
| Absolute magnitude | magnitude 3.28 |
| Spectral type | F9V |
| Surface temperature | 5,940 K |
| Luminosity | 4.42 L☉ |
| Radius | 1.98 R☉ |
| Mass | 1.45 M☉ (estimated) |
| Right ascension (J2000) | 8h 20m 13.0s |
| Declination (J2000) | −0° 54′ 34″ |
| Space velocity (relative to the Sun) | 19.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.18). Visible from the whole Southern Hemisphere and north to latitude 89° N. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1902. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around HIP 40858, the Sun would look like a star of magnitude 7.73, in the direction where our sky has the constellation Aquila. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ULAS J082707.67-020408.2 4.51 light-years
- HIP 41307 8.54 light-years
- HIP 41209 10.7 light-years
- HIP 40765 11.0 light-years
- HIP 41479 13.5 light-years
- SDSSp J083717.22-000018.3 16.0 light-years
- SDSS J084751.48+013811.0 16.2 light-years
- HIP 41277 16.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.