Star · M4V
2MASS J17164469+2302220
2MASS J17164469+2302220 is a main-sequence star of spectral type M4V in the constellation Hercules, 260.9 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 260.9 light-years (80.0 pc) |
| Apparent magnitude | magnitude 22.52 |
| Absolute magnitude | magnitude 18.00 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 9.87 × 10⁻⁵ L☉ |
| Radius | 0.0374 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 16m 44.7s |
| Declination (J2000) | +23° 02′ 22″ |
| Space velocity (relative to the Sun) | 21.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.52. Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° 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 1765. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.6 million years.
The Sun seen from there
From a planet around 2MASS J17164469+2302220, the Sun would look like a star of magnitude 9.35, 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):
- HIP 84976 5.89 light-years
- HIP 84070 7.94 light-years
- 63 Her 8.09 light-years
- HIP 84187 13.8 light-years
- HIP 84579 13.8 light-years
- HIP 83753 15.2 light-years
- HIP 84840 16.9 light-years
- HIP 83698 17.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.