Star · M2V
SDSS J163748.65+275254.6
SDSS J163748.65+275254.6 is a main-sequence star of spectral type M2V in the constellation Hercules, 165.2 light-years from the Sun.
| Constellation | Hercules |
|---|---|
| Distance | 165.2 light-years (50.6 pc) |
| Apparent magnitude | magnitude 21.45 |
| Absolute magnitude | magnitude 17.93 |
| Spectral type | M2V |
| Surface temperature | 3,290 K |
| Luminosity | 4.91 × 10⁻⁵ L☉ |
| Radius | 0.0215 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 37m 48.5s |
| Declination (J2000) | +27° 52′ 54″ |
| Space velocity (relative to the Sun) | 50.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.45. Visible from the whole Northern Hemisphere and south to latitude 62° S. North of latitude 62° 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 1861. 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 J163748.65+275254.6, the Sun would look like a star of magnitude 8.35, 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 J164438.14+284614.5 5.89 light-years
- HIP 81061 6.99 light-years
- 2MASS J16370238+2520386 7.58 light-years
- SDSS J164439.66+260013.3 9.23 light-years
- ULAS J162655.04+252446.8 11.0 light-years
- SDSS J162834.35+242847.2 13.7 light-years
- TOI-2266 15.6 light-years
- SDSS J164238.60+330855.6 16.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.