Star · F8V
HIP 81800
HIP 81800 is a main-sequence star of spectral type F8V in the constellation Hercules, 95.6 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 95.6 light-years (29.3 pc) |
| Apparent magnitude | magnitude 6.48 |
| Absolute magnitude | magnitude 4.15 |
| Spectral type | F8V |
| Surface temperature | 6,210 K |
| Luminosity | 1.92 L☉ |
| Radius | 1.2 R☉ |
| Mass | 1.18 M☉ (estimated) |
| Right ascension (J2000) | 16h 42m 27.8s |
| Declination (J2000) | +49° 56′ 11″ |
| Space velocity (relative to the Sun) | 27.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.48). Visible from the whole Northern Hemisphere and south to latitude 40° S. North of latitude 40° N 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 1930. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around HIP 81800, the Sun would look like a star of magnitude 7.16, in the direction where our sky has the constellation Pictor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3977 4.52 light-years
- HIP 82092 5.51 light-years
- HIP 79941 9.35 light-years
- 2MASS J16154255+4953211 9.89 light-years
- HIP 81633 9.99 light-years
- WISE J165842.56+510335.0 10.6 light-years
- Alrakis 11.5 light-years
- GJ 9584C 11.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.