Star · M4V
2MASS J15500191+4500451
2MASS J15500191+4500451 is a main-sequence star of spectral type M4V in the constellation Hercules, 195.7 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 195.7 light-years (60.0 pc) |
| Apparent magnitude | magnitude 22.83 |
| Absolute magnitude | magnitude 18.94 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 4.17 × 10⁻⁵ L☉ |
| Radius | 0.0243 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 15h 50m 01.9s |
| Declination (J2000) | +45° 00′ 45″ |
| Space velocity (relative to the Sun) | 28.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.83. Visible from the whole Northern Hemisphere and south to latitude 45° S. North of latitude 45° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1830. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.5 million years.
The Sun seen from there
From a planet around 2MASS J15500191+4500451, the Sun would look like a star of magnitude 8.72, in the direction where our sky has the constellation Horologium. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 77528 14.1 light-years
- HIP 76748 15.7 light-years
- HIP 76752 15.9 light-years
- HIP 75479 16.7 light-years
- HIP 76867 18.6 light-years
- HIP 75595 19.9 light-years
- HIP 77263 20.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.