Star · A7V
ι Tau
ι Tau is a main-sequence star of spectral type A7V in the constellation Taurus, 177.4 light-years from the Sun.
| Other names | HIP 23497 |
|---|---|
| Constellation | Taurus |
| Distance | 177.4 light-years (54.4 pc) |
| Apparent magnitude | magnitude 4.62 |
| Absolute magnitude | magnitude 0.94 |
| Spectral type | A7V |
| Surface temperature | 8,530 K |
| Luminosity | 40.2 L☉ |
| Radius | 2.9 R☉ |
| Mass | 2.61 M☉ (estimated) |
| Right ascension (J2000) | 5h 03m 05.7s |
| Declination (J2000) | +21° 35′ 24″ |
| Space velocity (relative to the Sun) | 46.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.62). 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 December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1849. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.1 million years.
The Sun seen from there
From a planet around ι Tau, the Sun would look like a star of magnitude 8.51, 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):
- HIP 23750 12.1 light-years
- HIP 22253 12.2 light-years
- HIP 23204 14.7 light-years
- HIP 24142 15.7 light-years
- HIP 22654 16.1 light-years
- 95 Tau 16.4 light-years
- HIP 25586 18.4 light-years
- HIP 24558 20.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.