Star · M4V
2MASS J15565004+1449081
2MASS J15565004+1449081 is a main-sequence star of spectral type M4V in the constellation Serpens, 140.2 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 140.2 light-years (43.0 pc) |
| Apparent magnitude | magnitude 22.81 |
| Absolute magnitude | magnitude 19.64 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.18 × 10⁻⁵ L☉ |
| Radius | 0.0176 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 15h 56m 50.0s |
| Declination (J2000) | +14° 49′ 09″ |
| Space velocity (relative to the Sun) | 19.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.81. Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° 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 1886. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.5 million years.
The Sun seen from there
From a planet around 2MASS J15565004+1449081, the Sun would look like a star of magnitude 8.00, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 77098 11.5 light-years
- β Ser 12.7 light-years
- HIP 76912 13.0 light-years
- 2MASS J15515237+0941148 14.7 light-years
- HIP 78688 15.6 light-years
- HIP 79720 16.1 light-years
- HIP 77083 17.1 light-years
- HIP 80262 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.