Star · M2V
SDSS J131748.68+183644.1
SDSS J131748.68+183644.1 is a main-sequence star of spectral type M2V in the constellation Coma Berenices, 207.4 light-years from the Sun.
| Constellation | Coma Berenices |
|---|---|
| Distance | 207.4 light-years (63.6 pc) |
| Apparent magnitude | magnitude 21.82 |
| Absolute magnitude | magnitude 17.80 |
| Spectral type | M2V |
| Surface temperature | 3,240 K |
| Luminosity | 6.16 × 10⁻⁵ L☉ |
| Radius | 0.0249 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 13h 17m 48.5s |
| Declination (J2000) | +18° 36′ 43″ |
| Space velocity (relative to the Sun) | 63.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.82. Visible from the whole Northern Hemisphere and south to latitude 71° S. North of latitude 71° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1819. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around SDSS J131748.68+183644.1, the Sun would look like a star of magnitude 8.85, in the direction where our sky has the constellation Cetus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 65069 5.71 light-years
- HIP 64186 11.7 light-years
- HIP 65216 14.2 light-years
- HIP 64254 14.2 light-years
- HIP 65085 14.5 light-years
- HIP 65725 18.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.