Star · K5
GJ 4174
GJ 4174 is a supergiant star of spectral type K5 in the constellation Cygnus, 2,006 light-years from the Sun.
| Other names | HIP 103580 |
|---|---|
| Constellation | Cygnus |
| Distance | 2,006 light-years (615.0 pc) |
| Apparent magnitude | magnitude 8.00 |
| Absolute magnitude | magnitude −0.94 |
| Spectral type | K5 |
| Surface temperature | 3,620 K |
| Luminosity | 966 L☉ |
| Radius | 79.1 R☉ |
| Mass | 6.47 M☉ (estimated) |
| Right ascension (J2000) | 20h 59m 14.1s |
| Declination (J2000) | +37° 55′ 48″ |
| Space velocity (relative to the Sun) | 54.5 km/s |
In the sky
Too faint for the naked eye (magnitude 8.00); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 20. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 36 million years.
The Sun seen from there
From a planet around GJ 4174, the Sun would look like a star of magnitude 13.77, in the direction where our sky has the constellation Vela. 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.