Star · F4V
HIP 81854
HIP 81854 is a main-sequence star of spectral type F4V in the constellation Ursa Minor, 117.3 light-years from the Sun.
| Constellation | Ursa Minor |
|---|---|
| Distance | 117.3 light-years (36.0 pc) |
| Apparent magnitude | magnitude 5.99 |
| Absolute magnitude | magnitude 3.21 |
| Spectral type | F4V |
| Surface temperature | 6,720 K |
| Luminosity | 4.41 L☉ |
| Radius | 1.55 R☉ |
| Mass | 1.45 M☉ (estimated) |
| Right ascension (J2000) | 16h 43m 06.3s |
| Declination (J2000) | +77° 30′ 50″ |
| Space velocity (relative to the Sun) | 37.0 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.99). Visible from the whole Northern Hemisphere and south to latitude 12° S. North of latitude 12° N it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1909. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.1 million years.
The Sun seen from there
From a planet around HIP 81854, the Sun would look like a star of magnitude 7.61, in the direction where our sky has the constellation Mensa. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.