Star · K9V
2MASS J23174712-4838501
2MASS J23174712-4838501 is a main-sequence star of spectral type K9V in the constellation Grus, 65.4 light-years from the Sun.
| Constellation | Grus |
|---|---|
| Distance | 65.4 light-years (20.1 pc) |
| Apparent magnitude | magnitude 21.57 |
| Absolute magnitude | magnitude 20.06 |
| Spectral type | K9V |
| Surface temperature | 3,790 K |
| Luminosity | 3.01 × 10⁻⁶ L☉ |
| Radius | 0.00404 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 23h 17m 47.5s |
| Declination (J2000) | −48° 38′ 49″ |
| Space velocity (relative to the Sun) | 24.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.57. Visible from the whole Southern Hemisphere and north to latitude 41° N. South of latitude 41° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1961. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around 2MASS J23174712-4838501, the Sun would look like a star of magnitude 6.34, 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):
- GJ 4325 2.50 light-years
- GJ 4310 3.37 light-years
- GJ 4361 6.03 light-years
- HIP 113697 8.50 light-years
- GJ 4335 8.61 light-years
- 2MASS J23312378-4718274 8.83 light-years
- GJ 4353 9.51 light-years
- WISEA J235456.63-481440.1 9.71 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.