Star · M4V
2MASS J17161258+4125143
2MASS J17161258+4125143 is a main-sequence star of spectral type M4V in the constellation Hercules, 159.8 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 159.8 light-years (49.0 pc) |
| Apparent magnitude | magnitude 22.32 |
| Absolute magnitude | magnitude 18.87 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 4.45 × 10⁻⁵ L☉ |
| Radius | 0.0251 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 16m 12.6s |
| Declination (J2000) | +41° 25′ 14″ |
| Space velocity (relative to the Sun) | 7.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.32. Visible from the whole Northern Hemisphere and south to latitude 49° S. North of latitude 49° 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 1866. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.8 million years.
The Sun seen from there
From a planet around 2MASS J17161258+4125143, the Sun would look like a star of magnitude 8.28, 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 85414 6.22 light-years
- HIP 86292 11.7 light-years
- HIP 85209 13.3 light-years
- HIP 82636 14.2 light-years
- HIP 83995 15.8 light-years
- HIP 82644 16.2 light-years
- HIP 83222 16.4 light-years
- 69 Her 19.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.