Star · ?
GJ 3958
GJ 3958 is a white dwarf of spectral type ? in the constellation Octans, 5,136 light-years from the Sun.
| Constellation | Octans |
|---|---|
| Distance | 5,136 light-years (1,575 pc) |
| Apparent magnitude | magnitude 14.58 |
| Absolute magnitude | magnitude 3.59 |
| Spectral type | ? |
| Surface temperature | 8,010 K |
| Luminosity | 0.05 L☉ |
| Radius | 0.012 R☉ |
| Mass | 0.6 M☉ (estimated) |
| Right ascension (J2000) | 16h 53m 15.8s |
| Declination (J2000) | −87° 25′ 31″ |
| Space velocity (relative to the Sun) | 18.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.58. Visible from the whole Southern Hemisphere and north to latitude 3° N. South of latitude 3° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out 5,136 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 91 million years.
The Sun seen from there
From a planet around GJ 3958, the Sun would look like a star of magnitude 15.82, in the direction where our sky has the constellation Cepheus. It would be invisible to the naked eye.
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.