Star · A7V
GJ 9733B
GJ 9733B is a main-sequence star of spectral type A7V in the constellation Indus, 98.1 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 98.1 light-years (30.1 pc) |
| Apparent magnitude | magnitude 6.90 |
| Absolute magnitude | magnitude 4.51 |
| Spectral type | A7V |
| Surface temperature | 5,920 K |
| Luminosity | 1.42 L☉ |
| Radius | 1.13 R☉ |
| Mass | 1.09 M☉ (estimated) |
| Right ascension (J2000) | 21h 19m 51.1s |
| Declination (J2000) | −53° 26′ 58″ |
| Space velocity (relative to the Sun) | 18.5 km/s |
In the sky
Too faint for the naked eye (magnitude 6.90); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 37° N. South of latitude 37° 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 1928. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.7 million years.
The Sun seen from there
From a planet around GJ 9733B, the Sun would look like a star of magnitude 7.22, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- θ Ind 0.53 light-years
- HIP 103820 5.81 light-years
- HIP 107865 9.88 light-years
- VHS J205159.38-550843.9 9.96 light-years
- WISEA J211157.85-521111.2 10.5 light-years
- HIP 103673 10.6 light-years
- HIP 104526 10.9 light-years
- HIP 107620 12.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.