Star · M5
GJ 4273
GJ 4273 is a main-sequence star of spectral type M5 in the constellation Tucana, 62.5 light-years from the Sun.
| Other names | HIP 110400 |
|---|---|
| Constellation | Tucana |
| Distance | 62.5 light-years (19.2 pc) |
| Apparent magnitude | magnitude 12.11 |
| Absolute magnitude | magnitude 10.70 |
| Spectral type | M5 |
| Surface temperature | 3,580 K |
| Luminosity | 0.0227 L☉ |
| Radius | 0.393 R☉ |
| Mass | 0.366 M☉ (estimated) |
| Right ascension (J2000) | 22h 21m 43.0s |
| Declination (J2000) | −65° 31′ 34″ |
| Space velocity (relative to the Sun) | 29.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.11. Visible from the whole Southern Hemisphere and north to latitude 24° N. South of latitude 24° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1963. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around GJ 4273, the Sun would look like a star of magnitude 6.24, in the direction where our sky has the constellation Ursa Major. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- CWISEP J230158.30-645858.3 5.64 light-years
- GJ 1262 8.85 light-years
- WISE J223204.50-573010.5 8.86 light-years
- GJ 1282 8.95 light-years
- GJ 1280 9.03 light-years
- Gl 855 9.03 light-years
- GJ 4222 9.09 light-years
- GJ 1283 9.25 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.