Star · K9V
SDSS J164438.14+284614.5
SDSS J164438.14+284614.5 is a main-sequence star of spectral type K9V in the constellation Hercules, 162.0 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 162.0 light-years (49.7 pc) |
| Apparent magnitude | magnitude 21.48 |
| Absolute magnitude | magnitude 18.00 |
| Spectral type | K9V |
| Surface temperature | 3,770 K |
| Luminosity | 2.04 × 10⁻⁵ L☉ |
| Radius | 0.0106 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 44m 38.0s |
| Declination (J2000) | +28° 46′ 14″ |
| Space velocity (relative to the Sun) | 38.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.48. Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 1864. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.9 million years.
The Sun seen from there
From a planet around SDSS J164438.14+284614.5, the Sun would look like a star of magnitude 8.31, 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 J163748.65+275254.6 5.89 light-years
- SDSS J164439.66+260013.3 8.33 light-years
- 2MASS J16370238+2520386 10.9 light-years
- HIP 81061 11.5 light-years
- ε Her 11.9 light-years
- SDSS J164238.60+330855.6 12.7 light-years
- HIP 83630 15.0 light-years
- 2MASSI J1656188+283506 16.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.