Star · M4V
2MASS J17081563+2557474
2MASS J17081563+2557474 is a main-sequence star of spectral type M4V in the constellation Hercules, 104.4 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 104.4 light-years (32.0 pc) |
| Apparent magnitude | magnitude 22.42 |
| Absolute magnitude | magnitude 19.89 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.73 × 10⁻⁵ L☉ |
| Radius | 0.0157 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 08m 15.6s |
| Declination (J2000) | +25° 57′ 48″ |
| Space velocity (relative to the Sun) | 8.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.42. Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° 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 1922. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around 2MASS J17081563+2557474, the Sun would look like a star of magnitude 7.36, in the direction where our sky has the constellation Lepus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEA J171331.68+245000.9 4.46 light-years
- 2MASS J17111353+2326333 4.99 light-years
- GJ 3994 8.16 light-years
- 2MASSI J1711457+223204 9.01 light-years
- HIP 85436 9.10 light-years
- HIP 85007 9.35 light-years
- PSO J261.2881+22.9269 9.37 light-years
- HIP 83113 9.55 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.