Star · G5V
GJ 3177
GJ 3177 is a main-sequence star of spectral type G5V in the constellation Fornax, 335.5 light-years from the Sun.
| Other names | HIP 12778 |
|---|---|
| Constellation | Fornax |
| Distance | 335.5 light-years (102.9 pc) |
| Apparent magnitude | magnitude 7.13 |
| Absolute magnitude | magnitude 2.07 |
| Spectral type | G5V |
| Surface temperature | 5,400 K |
| Luminosity | 15.1 L☉ |
| Radius | 4.44 R☉ |
| Mass | 1.97 M☉ (estimated) |
| Right ascension (J2000) | 2h 44m 13.0s |
| Declination (J2000) | −36° 18′ 27″ |
| Space velocity (relative to the Sun) | 19.4 km/s |
In the sky
Too faint for the naked eye (magnitude 7.13); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 54° N. South of latitude 54° S it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1690. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 6.0 million years.
The Sun seen from there
From a planet around GJ 3177, the Sun would look like a star of magnitude 9.89, in the direction where our sky has the constellation Boötes. 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.