Star · F5V
Gl 255A
Gl 255A is a main-sequence star of spectral type F5V in the constellation Puppis, 140.6 light-years from the Sun.
| Other names | HIP 33451 |
|---|---|
| Constellation | Puppis |
| Distance | 140.6 light-years (43.1 pc) |
| Apparent magnitude | magnitude 6.23 |
| Absolute magnitude | magnitude 3.06 |
| Spectral type | F5V |
| Surface temperature | 6,550 K |
| Luminosity | 5.11 L☉ |
| Radius | 1.75 R☉ |
| Mass | 1.5 M☉ (estimated) |
| Right ascension (J2000) | 6h 57m 17.6s |
| Declination (J2000) | −35° 30′ 26″ |
| Space velocity (relative to the Sun) | 11.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 6.23). 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 1885. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.5 million years.
The Sun seen from there
From a planet around Gl 255A, the Sun would look like a star of magnitude 8.00, in the direction where our sky has the constellation Lyra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.