Star · M4V
2MASS J17545447+1649196
2MASS J17545447+1649196 is a main-sequence star of spectral type M4V in the constellation Hercules, 44.0 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 44.0 light-years (13.5 pc) |
| Apparent magnitude | magnitude 23.31 |
| Absolute magnitude | magnitude 22.66 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.36 × 10⁻⁶ L☉ |
| Radius | 0.00439 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 54m 54.2s |
| Declination (J2000) | +16° 49′ 20″ |
| Space velocity (relative to the Sun) | 12.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.31. Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° 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 1982. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 781 thousand years.
The Sun seen from there
From a planet around 2MASS J17545447+1649196, the Sun would look like a star of magnitude 5.48, in the direction where our sky has the constellation Lepus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 4038 2.11 light-years
- Rasalhague 6.91 light-years
- GJ 4026 8.21 light-years
- GJ 3997 8.25 light-years
- GJ 1215 8.47 light-years
- GJ 4065 8.99 light-years
- WISE J181329.40+283533.3 9.65 light-years
- Gl 655 9.77 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.