Star · G8
GJ 3489A
GJ 3489A is a giant star of spectral type G8 in the constellation Puppis, 254.1 light-years from the Sun.
| Other names | HIP 40506 |
|---|---|
| Constellation | Puppis |
| Distance | 254.1 light-years (77.9 pc) |
| Apparent magnitude | magnitude 7.29 |
| Absolute magnitude | magnitude 2.83 |
| Spectral type | G8 |
| Surface temperature | 5,020 K |
| Luminosity | 8.58 L☉ |
| Radius | 3.87 R☉ |
| Mass | 1.71 M☉ (estimated) |
| Right ascension (J2000) | 8h 16m 12.6s |
| Declination (J2000) | −35° 52′ 56″ |
| Space velocity (relative to the Sun) | 29.2 km/s |
In the sky
Too faint for the naked eye (magnitude 7.29); 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 January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1772. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.5 million years.
The Sun seen from there
From a planet around GJ 3489A, the Sun would look like a star of magnitude 9.29, in the direction where our sky has the constellation Cygnus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HD 69123 9.22 light-years
- HIP 41754 16.6 light-years
- HIP 39565 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.