Star · K9V
2MASSI J1600054+170832
2MASSI J1600054+170832 is a main-sequence star of spectral type K9V in the constellation Serpens, 244.2 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 244.2 light-years (74.9 pc) |
| Apparent magnitude | magnitude 22.02 |
| Absolute magnitude | magnitude 17.65 |
| Spectral type | K9V |
| Surface temperature | 3,730 K |
| Luminosity | 2.98 × 10⁻⁵ L☉ |
| Radius | 0.0131 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 00m 05.5s |
| Declination (J2000) | +17° 08′ 33″ |
| Space velocity (relative to the Sun) | 8.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.02. 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 1782. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around 2MASSI J1600054+170832, the Sun would look like a star of magnitude 9.20, 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 79256 11.5 light-years
- φ Ser 12.3 light-years
- HIP 77868 13.0 light-years
- SDSS J155438.45+193906.7 13.9 light-years
- HIP 78283 14.2 light-years
- HIP 77247 18.6 light-years
- υ Ser 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.