Star · F6IV
HIP 55821
HIP 55821 is a subgiant star of spectral type F6IV in the constellation Ursa Major, 182.0 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 182.0 light-years (55.8 pc) |
| Apparent magnitude | magnitude 6.33 |
| Absolute magnitude | magnitude 2.60 |
| Spectral type | F6IV |
| Surface temperature | 6,610 K |
| Luminosity | 7.79 L☉ |
| Radius | 2.13 R☉ |
| Mass | 1.67 M☉ (estimated) |
| Right ascension (J2000) | 11h 26m 25.6s |
| Declination (J2000) | +33° 27′ 02″ |
| Space velocity (relative to the Sun) | 25.1 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.33). Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1844. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around HIP 55821, the Sun would look like a star of magnitude 8.56, in the direction where our sky has the constellation Sculptor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J111320.16+343057.9 10.2 light-years
- HIP 57205 11.9 light-years
- HIP 54056 15.3 light-years
- HIP 54619 15.9 light-years
- TOI-1806 17.6 light-years
- HIP 55316 17.6 light-years
- HIP 56362 18.3 light-years
- HIP 55413 18.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.