Star · G5
GJ 3004
GJ 3004 is a supergiant star of spectral type G5 in the constellation Andromeda, 1,122 light-years from the Sun.
| Other names | HIP 437 |
|---|---|
| Constellation | Andromeda |
| Distance | 1,122 light-years (343.9 pc) |
| Apparent magnitude | magnitude 8.30 |
| Absolute magnitude | magnitude 0.62 |
| Spectral type | G5 |
| Surface temperature | 4,750 K |
| Luminosity | 75.6 L☉ |
| Radius | 12.9 R☉ |
| Mass | 3.13 M☉ (estimated) |
| Right ascension (J2000) | 0h 05m 17.9s |
| Declination (J2000) | +48° 28′ 38″ |
| Space velocity (relative to the Sun) | 31.9 km/s |
In the sky
Too faint for the naked eye (magnitude 8.30); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 42° S. North of latitude 42° N 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 904. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 20 million years.
The Sun seen from there
From a planet around GJ 3004, the Sun would look like a star of magnitude 12.51, 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.