Star · A7V
κ² Tau
κ² Tau is a main-sequence star of spectral type A7V in the constellation Taurus, 148.1 light-years from the Sun.
| Other names | HIP 20641 |
|---|---|
| Constellation | Taurus |
| Distance | 148.1 light-years (45.4 pc) |
| Apparent magnitude | magnitude 5.27 |
| Absolute magnitude | magnitude 1.98 |
| Spectral type | A7V |
| Surface temperature | 7,800 K |
| Luminosity | 14.3 L☉ |
| Radius | 2.07 R☉ |
| Mass | 1.94 M☉ (estimated) |
| Right ascension (J2000) | 4h 25m 25.0s |
| Declination (J2000) | +22° 11′ 59″ |
| Space velocity (relative to the Sun) | 41.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.27). Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° 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 1878. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around κ² Tau, the Sun would look like a star of magnitude 8.12, in the direction where our sky has the constellation Ophiuchus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- υ Tau 2.49 light-years
- HIP 21380 6.39 light-years
- HIP 21099 6.78 light-years
- HIP 20712 7.30 light-years
- HIP 20482 7.34 light-years
- HIP 19793 7.39 light-years
- HIP 20557 7.67 light-years
- HIP 21256 7.81 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.