Star · M3
Gl 618.4
Gl 618.4 is a main-sequence star of spectral type M3 in the constellation Norma, 77.3 light-years from the Sun.
| Other names | HIP 80229 |
|---|---|
| Constellation | Norma |
| Distance | 77.3 light-years (23.7 pc) |
| Apparent magnitude | magnitude 11.82 |
| Absolute magnitude | magnitude 9.95 |
| Spectral type | M3 |
| Surface temperature | 3,870 K |
| Luminosity | 0.0299 L☉ |
| Radius | 0.385 R☉ |
| Mass | 0.412 M☉ (estimated) |
| Right ascension (J2000) | 16h 22m 40.9s |
| Declination (J2000) | −48° 39′ 19″ |
| Space velocity (relative to the Sun) | 107.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.82. 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 May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1949. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around Gl 618.4, the Sun would look like a star of magnitude 6.70, in the direction where our sky has the constellation Perseus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.