Star · M4V
2MASS J17164260+2945536
2MASS J17164260+2945536 is a main-sequence star of spectral type M4V in the constellation Hercules, 290.3 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 290.3 light-years (89.0 pc) |
| Apparent magnitude | magnitude 22.56 |
| Absolute magnitude | magnitude 17.81 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.18 × 10⁻⁴ L☉ |
| Radius | 0.0408 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 16m 42.6s |
| Declination (J2000) | +29° 45′ 54″ |
| Space velocity (relative to the Sun) | 22.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.56. Visible from the whole Northern Hemisphere and south to latitude 60° S. North of latitude 60° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1736. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.1 million years.
The Sun seen from there
From a planet around 2MASS J17164260+2945536, the Sun would look like a star of magnitude 9.58, in the direction where our sky has the constellation Columba. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 84341 8.82 light-years
- HIP 85781 17.1 light-years
- HIP 83815 18.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.