Star · G2V
Gl 454.2B
Gl 454.2B is a main-sequence star of spectral type G2V in the constellation Hydra, 183.2 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 183.2 light-years (56.2 pc) |
| Apparent magnitude | magnitude 8.10 |
| Absolute magnitude | magnitude 4.35 |
| Spectral type | G2V |
| Surface temperature | 5,780 K |
| Luminosity | 1.69 L☉ |
| Radius | 1.3 R☉ |
| Mass | 1.14 M☉ (estimated) |
| Right ascension (J2000) | 12h 01m 45.7s |
| Declination (J2000) | −34° 38′ 59″ |
| Space velocity (relative to the Sun) | 50.4 km/s |
In the sky
Too faint for the naked eye (magnitude 8.10); binoculars will find it. Visible from the whole Southern Hemisphere and north to latitude 55° N. South of latitude 55° S it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1843. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.3 million years.
The Sun seen from there
From a planet around Gl 454.2B, the Sun would look like a star of magnitude 8.58, in the direction where our sky has the constellation Andromeda. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 454.2A 0.72 light-years
- HIP 58363 9.96 light-years
- HIP 57225 13.1 light-years
- HIP 59077 14.7 light-years
- HIP 60104 15.1 light-years
- HIP 59557 16.0 light-years
- HIP 60317 17.1 light-years
- HIP 60007 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.