Star · F8
GJ 9057
GJ 9057 is a main-sequence star of spectral type F8 in the constellation Triangulum, 684.4 light-years from the Sun.
| Other names | HIP 7334 |
|---|---|
| Constellation | Triangulum |
| Distance | 684.4 light-years (209.8 pc) |
| Apparent magnitude | magnitude 9.56 |
| Absolute magnitude | magnitude 2.95 |
| Spectral type | F8 |
| Surface temperature | 6,340 K |
| Luminosity | 5.71 L☉ |
| Radius | 1.98 R☉ |
| Mass | 1.55 M☉ (estimated) |
| Right ascension (J2000) | 1h 34m 27.4s |
| Declination (J2000) | +34° 40′ 44″ |
| Space velocity (relative to the Sun) | 22.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.56. Visible from the whole Northern Hemisphere and south to latitude 55° S. North of latitude 55° N 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 1342. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 12 million years.
The Sun seen from there
From a planet around GJ 9057, the Sun would look like a star of magnitude 11.44, in the direction where our sky has the constellation Centaurus. 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.