Star · F1V
ψ Tau
ψ Tau is a main-sequence star of spectral type F1V in the constellation Taurus, 90.8 light-years from the Sun.
| Other names | HIP 19205 |
|---|---|
| Constellation | Taurus |
| Distance | 90.8 light-years (27.8 pc) |
| Apparent magnitude | magnitude 5.21 |
| Absolute magnitude | magnitude 2.99 |
| Spectral type | F1V |
| Surface temperature | 7,110 K |
| Luminosity | 5.44 L☉ |
| Radius | 1.54 R☉ |
| Mass | 1.53 M☉ (estimated) |
| Right ascension (J2000) | 4h 07m 00.5s |
| Declination (J2000) | +29° 00′ 05″ |
| Space velocity (relative to the Sun) | 14.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.21). Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1935. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around ψ Tau, the Sun would look like a star of magnitude 7.05, 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):
- 2MASP J0345432+254023 10.1 light-years
- 2MASSW J0355419+225702 11.7 light-years
- HIP 20834 11.8 light-years
- GJ 3242 12.7 light-years
- GJ 9120 12.7 light-years
- HIP 18097 13.4 light-years
- HIP 17458 13.5 light-years
- WISE J033651.90+282628.8 13.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.