Star · K3
GJ 2004
GJ 2004 is a main-sequence star of spectral type K3 in the constellation Sculptor, 72.2 light-years from the Sun.
| Other names | HIP 1837 |
|---|---|
| Constellation | Sculptor |
| Distance | 72.2 light-years (22.2 pc) |
| Apparent magnitude | magnitude 8.74 |
| Absolute magnitude | magnitude 7.01 |
| Spectral type | K3 |
| Surface temperature | 4,570 K |
| Luminosity | 0.233 L☉ |
| Radius | 0.771 R☉ |
| Mass | 0.695 M☉ (estimated) |
| Right ascension (J2000) | 0h 23m 15.9s |
| Declination (J2000) | −33° 10′ 03″ |
| Space velocity (relative to the Sun) | 14.4 km/s |
In the sky
Too faint for the naked eye (magnitude 8.74); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 57° N. South of latitude 57° S it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1954. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.3 million years.
The Sun seen from there
From a planet around GJ 2004, the Sun would look like a star of magnitude 6.56, in the direction where our sky has the constellation Coma Berenices. 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.