Star · B2V
10 Mon
10 Mon is a main-sequence star of spectral type B2V in the constellation Monoceros, 798.6 light-years from the Sun.
| Other names | HIP 30772 |
|---|---|
| Constellation | Monoceros |
| Distance | 798.6 light-years (244.8 pc) |
| Apparent magnitude | magnitude 5.06 |
| Absolute magnitude | magnitude −1.88 |
| Spectral type | B2V |
| Surface temperature | 13,010 K |
| Luminosity | 1,090 L☉ |
| Radius | 6.5 R☉ |
| Mass | 6.7 M☉ (estimated) |
| Right ascension (J2000) | 6h 27m 57.6s |
| Declination (J2000) | −4° 45′ 44″ |
| Space velocity (relative to the Sun) | 25.9 km/s |
In the sky
Visible to the naked eye under a dark sky (apparent magnitude 5.06). Visible from the whole Southern Hemisphere and north to latitude 85° N. It stands highest at midnight in December, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1227. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 14 million years.
The Sun seen from there
From a planet around 10 Mon, the Sun would look like a star of magnitude 11.77, in the direction where our sky has the constellation Serpens. 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.