Star · ?
GJ 3173
GJ 3173 is a white dwarf of spectral type ? in the constellation Cetus, 194.5 light-years from the Sun.
| Constellation | Cetus |
|---|---|
| Distance | 194.5 light-years (59.6 pc) |
| Apparent magnitude | magnitude 15.09 |
| Absolute magnitude | magnitude 11.21 |
| Spectral type | ? |
| Surface temperature | 8,000 K |
| Luminosity | 0.00296 L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 2h 38m 28.8s |
| Declination (J2000) | +6° 37′ 28″ |
| Space velocity (relative to the Sun) | 26.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.09. Visible from the whole Northern Hemisphere and south to latitude 83° S. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1831. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.5 million years.
The Sun seen from there
From a planet around GJ 3173, the Sun would look like a star of magnitude 8.71, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- ξ² Cet 11.0 light-years
- HIP 12925 11.1 light-years
- HIP 12440 12.9 light-years
- HIP 12034 12.9 light-years
- HIP 12856 15.7 light-years
- HIP 11005 15.9 light-years
- HIP 11338 16.2 light-years
- HIP 11417 19.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.