Star · ?
GJ 3618
GJ 3618 is a main-sequence star of spectral type ? in the constellation Carina, 15.8 light-years from the Sun.
| Constellation | Carina |
|---|---|
| Distance | 15.8 light-years (4.83 pc) |
| Apparent magnitude | magnitude 13.92 |
| Absolute magnitude | magnitude 15.50 |
| Spectral type | ? |
| Surface temperature | 3,370 K |
| Luminosity | 3.95 × 10⁻⁴ L☉ |
| Radius | 0.0584 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 44m 32.9s |
| Declination (J2000) | −61° 11′ 36″ |
| Space velocity (relative to the Sun) | 37.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.92. Visible from the whole Southern Hemisphere and north to latitude 29° N. South of latitude 29° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 2010. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 280 thousand years.
The Sun seen from there
From a planet around GJ 3618, the Sun would look like a star of magnitude 3.25, in the direction where our sky has the constellation Cepheus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 440 2.20 light-years
- DENIS J081730.0-615520 5.08 light-years
- GJ 1128 6.32 light-years
- WISE J163940.83-684738.6 9.32 light-years
- Luhman 16 9.35 light-years
- 2MASS J11145133-2618235 10.5 light-years
- 2MASS J09393548-2448279 10.9 light-years
- GJ 3737 11.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.