Star · M1
GJ 9724
GJ 9724 is a main-sequence star of spectral type M1 in the constellation Microscopium, 51.5 light-years from the Sun.
| Other names | HIP 104644 |
|---|---|
| Constellation | Microscopium |
| Distance | 51.5 light-years (15.8 pc) |
| Apparent magnitude | magnitude 11.98 |
| Absolute magnitude | magnitude 10.99 |
| Spectral type | M1 |
| Surface temperature | 3,670 K |
| Luminosity | 0.0151 L☉ |
| Radius | 0.304 R☉ |
| Mass | 0.306 M☉ (estimated) |
| Right ascension (J2000) | 21h 11m 49.5s |
| Declination (J2000) | −43° 36′ 49″ |
| Space velocity (relative to the Sun) | 54.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.98. Visible from the whole Southern Hemisphere and north to latitude 46° N. South of latitude 46° 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 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 913 thousand years.
The Sun seen from there
From a planet around GJ 9724, the Sun would look like a star of magnitude 5.82, in the direction where our sky has the constellation Lynx. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 838 6.61 light-years
- Gl 838.6 7.40 light-years
- Gl 833 7.92 light-years
- WISEA J214155.85-511853.1 8.25 light-years
- Gl 841B 9.70 light-years
- 2MASS J21513839-4853542 9.73 light-years
- Gl 841A 9.78 light-years
- WISE J215949.48-480854.9 10.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.