Star · A2V
HIP 17954
HIP 17954 is a main-sequence star of spectral type A2V in the constellation Taurus, 184.2 light-years from the Sun.
| Constellation | Taurus |
|---|---|
| Distance | 184.2 light-years (56.5 pc) |
| Apparent magnitude | magnitude 5.24 |
| Absolute magnitude | magnitude 1.48 |
| Spectral type | A2V |
| Surface temperature | 7,930 K |
| Luminosity | 22.9 L☉ |
| Radius | 2.54 R☉ |
| Mass | 2.22 M☉ (estimated) |
| Right ascension (J2000) | 3h 50m 18.9s |
| Declination (J2000) | +25° 34′ 46″ |
| Space velocity (relative to the Sun) | 32.5 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.24). Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° 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 1842. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around HIP 17954, the Sun would look like a star of magnitude 8.59, in the direction where our sky has the constellation Scorpius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 18623 7.49 light-years
- HIP 17305 10.8 light-years
- HIP 19136 13.0 light-years
- HIP 17482 14.0 light-years
- HIP 19219 14.4 light-years
- HIP 17470 14.6 light-years
- 37 Tau 15.5 light-years
- HIP 17803 16.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.