Star · M4V
2MASS J17570962+4325139
2MASS J17570962+4325139 is a main-sequence star of spectral type M4V in the constellation Hercules, 215.3 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 215.3 light-years (66.0 pc) |
| Apparent magnitude | magnitude 22.23 |
| Absolute magnitude | magnitude 18.13 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 8.77 × 10⁻⁵ L☉ |
| Radius | 0.0353 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 57m 09.6s |
| Declination (J2000) | +43° 25′ 14″ |
| Space velocity (relative to the Sun) | 21.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.23. Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° 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 1811. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around 2MASS J17570962+4325139, the Sun would look like a star of magnitude 8.93, in the direction where our sky has the constellation Pictor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 87691 11.5 light-years
- HIP 86453 12.2 light-years
- HIP 87612 17.5 light-years
- HIP 86411 17.7 light-years
- HIP 87168 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.