Star · A5V
HIP 17891
HIP 17891 is a main-sequence star of spectral type A5V in the constellation Camelopardalis, 233.8 light-years from the Sun.
| Constellation | Camelopardalis |
|---|---|
| Distance | 233.8 light-years (71.7 pc) |
| Apparent magnitude | magnitude 5.82 |
| Absolute magnitude | magnitude 1.54 |
| Spectral type | A5V |
| Surface temperature | 8,250 K |
| Luminosity | 22.4 L☉ |
| Radius | 2.32 R☉ |
| Mass | 2.21 M☉ (estimated) |
| Right ascension (J2000) | 3h 49m 36.6s |
| Declination (J2000) | +63° 17′ 49″ |
| Space velocity (relative to the Sun) | 21.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.82). Visible from the whole Northern Hemisphere and south to latitude 27° S. North of latitude 27° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1792. 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 17891, the Sun would look like a star of magnitude 9.11, in the direction where our sky has the constellation Triangulum Australe. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 18608 9.49 light-years
- HIP 20669 17.5 light-years
- HIP 17887 18.5 light-years
- HIP 14777 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.