Star · ?
GJ 4013
GJ 4013 is a main-sequence star of spectral type ? in the constellation Ophiuchus, 54.4 light-years from the Sun.
| Constellation | Ophiuchus |
|---|---|
| Distance | 54.4 light-years (16.7 pc) |
| Apparent magnitude | magnitude 10.94 |
| Absolute magnitude | magnitude 9.83 |
| Spectral type | ? |
| Surface temperature | 3,840 K |
| Luminosity | 0.0347 L☉ |
| Radius | 0.421 R☉ |
| Mass | 0.431 M☉ (estimated) |
| Right ascension (J2000) | 17h 38m 03.3s |
| Declination (J2000) | −30° 01′ 02″ |
| Space velocity (relative to the Sun) | 18.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.94. Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1972. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 964 thousand years.
The Sun seen from there
From a planet around GJ 4013, the Sun would look like a star of magnitude 5.94, in the direction where our sky has the constellation Auriga. It would be visible 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.