Star · G4V
104 Tau
104 Tau is a main-sequence star of spectral type G4V in the constellation Taurus, 51.9 light-years from the Sun.
| Other names | Gl 188A · HIP 23835 |
|---|---|
| Constellation | Taurus |
| Distance | 51.9 light-years (15.9 pc) |
| Apparent magnitude | magnitude 4.91 |
| Absolute magnitude | magnitude 3.90 |
| Spectral type | G4V |
| Surface temperature | 5,750 K |
| Luminosity | 2.57 L☉ |
| Radius | 1.61 R☉ |
| Mass | 1.27 M☉ (estimated) |
| Right ascension (J2000) | 5h 07m 27.0s |
| Declination (J2000) | +18° 38′ 42″ |
| Space velocity (relative to the Sun) | 45.3 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 4.91). Visible from the whole Northern Hemisphere and south to latitude 71° S. North of latitude 71° 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 1974. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 921 thousand years.
The Sun seen from there
From a planet around 104 Tau, the Sun would look like a star of magnitude 5.84, in the direction where our sky has the constellation Ophiuchus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.