Star · A3
ω² Tau
ω² Tau is a main-sequence star of spectral type A3 in the constellation Taurus, 93.0 light-years from the Sun.
| Other names | HIP 19990 |
|---|---|
| Constellation | Taurus |
| Distance | 93.0 light-years (28.5 pc) |
| Apparent magnitude | magnitude 4.93 |
| Absolute magnitude | magnitude 2.66 |
| Spectral type | A3 |
| Surface temperature | 7,730 K |
| Luminosity | 7.65 L☉ |
| Radius | 1.54 R☉ |
| Mass | 1.66 M☉ (estimated) |
| Right ascension (J2000) | 4h 17m 15.7s |
| Declination (J2000) | +20° 34′ 43″ |
| Space velocity (relative to the Sun) | 16.4 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.93). Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° 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 1933. 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 ω² Tau, the Sun would look like a star of magnitude 7.10, 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 20834 8.12 light-years
- WISEA J040702.42+190945.8 9.40 light-years
- HIP 18097 11.1 light-years
- 2MASSI J0409095+210439 11.7 light-years
- 2MASSW J0355419+225702 11.9 light-years
- HIP 19981 12.4 light-years
- WISEPA J041054.48+141131.6 13.0 light-years
- ψ Tau 14.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.