Star · ?
Gl 440
Gl 440 is a white dwarf of spectral type ? in the constellation Musca, 15.1 light-years from the Sun.
| Other names | HIP 57367 |
|---|---|
| Constellation | Musca |
| Distance | 15.1 light-years (4.64 pc) |
| Apparent magnitude | magnitude 11.50 |
| Absolute magnitude | magnitude 13.17 |
| Spectral type | ? |
| Surface temperature | 8,190 K |
| Luminosity | 4.97 × 10⁻⁴ L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 11h 45m 42.8s |
| Declination (J2000) | −64° 50′ 30″ |
| Space velocity (relative to the Sun) | 58.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.50. Visible from the whole Southern Hemisphere and north to latitude 25° N. South of latitude 25° 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 2011. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 268 thousand years.
The Sun seen from there
From a planet around Gl 440, the Sun would look like a star of magnitude 3.16, in the direction where our sky has the constellation Cassiopeia. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3618 2.20 light-years
- DENIS J081730.0-615520 6.62 light-years
- WISE J163940.83-684738.6 7.23 light-years
- GJ 1128 7.24 light-years
- Luhman 16 8.92 light-years
- GJ 3737 10.9 light-years
- Toliman 11.2 light-years
- Rigil Kentaurus 11.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.