Star · M4V
2MASS J16154255+4953211
2MASS J16154255+4953211 is a main-sequence star of spectral type M4V in the constellation Hercules, 102.1 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 102.1 light-years (31.3 pc) |
| Apparent magnitude | magnitude 22.29 |
| Absolute magnitude | magnitude 19.81 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.87 × 10⁻⁵ L☉ |
| Radius | 0.0163 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 15m 42.6s |
| Declination (J2000) | +49° 53′ 21″ |
| Space velocity (relative to the Sun) | 29.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.29. Visible from the whole Northern Hemisphere and south to latitude 40° S. North of latitude 40° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1924. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around 2MASS J16154255+4953211, the Sun would look like a star of magnitude 7.31, in the direction where our sky has the constellation Dorado. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 79941 3.48 light-years
- HIP 81633 8.14 light-years
- HIP 82092 8.75 light-years
- HIP 81800 9.89 light-years
- HIP 79512 9.96 light-years
- HIP 77790 10.9 light-years
- GJ 3977 11.8 light-years
- WISE J165842.56+510335.0 12.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.