Star · ?
GJ 3243
GJ 3243 is a main-sequence star of spectral type ? in the constellation Hydrus, 53.5 light-years from the Sun.
| Constellation | Hydrus |
|---|---|
| Distance | 53.5 light-years (16.4 pc) |
| Apparent magnitude | magnitude 11.95 |
| Absolute magnitude | magnitude 10.88 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0172 L☉ |
| Radius | 0.328 R☉ |
| Mass | 0.324 M☉ (estimated) |
| Right ascension (J2000) | 3h 38m 12.2s |
| Declination (J2000) | −68° 56′ 59″ |
| Space velocity (relative to the Sun) | 46.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.95. Visible from the whole Southern Hemisphere and north to latitude 21° N. South of latitude 21° S it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1973. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 948 thousand years.
The Sun seen from there
From a planet around GJ 3243, the Sun would look like a star of magnitude 5.90, in the direction where our sky has the constellation Ursa Minor. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 143 5.19 light-years
- GJ 3141 10.6 light-years
- GJ 1077 10.6 light-years
- WISEA J030237.52-581740.3 10.7 light-years
- WISEPC J032337.53-602554.9 11.0 light-years
- WISE J053516.80-750024.9 11.1 light-years
- HIP 25647 11.1 light-years
- GJ 3279 11.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.