Star · K9V
2MASS J15311344+1641282
2MASS J15311344+1641282 is a main-sequence star of spectral type K9V in the constellation Serpens, 122.6 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 122.6 light-years (37.6 pc) |
| Apparent magnitude | magnitude 21.57 |
| Absolute magnitude | magnitude 18.70 |
| Spectral type | K9V |
| Surface temperature | 3,800 K |
| Luminosity | 1.04 × 10⁻⁵ L☉ |
| Radius | 0.00746 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 15h 31m 13.3s |
| Declination (J2000) | +16° 41′ 29″ |
| Space velocity (relative to the Sun) | 16.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.57. 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 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 1903. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.2 million years.
The Sun seen from there
From a planet around 2MASS J15311344+1641282, the Sun would look like a star of magnitude 7.70, 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):
- SDSS J153417.05+161546.1 4.83 light-years
- HIP 76282 11.6 light-years
- HIP 77881 13.8 light-years
- HIP 75021 14.0 light-years
- 2MASS J15500845+1455180 14.7 light-years
- HIP 73593 15.3 light-years
- HIP 74118 16.5 light-years
- HIP 75193 17.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.