Star · M4V
SDSS J131839.06+213043.0
SDSS J131839.06+213043.0 is a main-sequence star of spectral type M4V in the constellation Coma Berenices, 260.9 light-years from the Sun.
| Constellation | Coma Berenices |
|---|---|
| Distance | 260.9 light-years (80.0 pc) |
| Apparent magnitude | magnitude 21.94 |
| Absolute magnitude | magnitude 17.42 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.68 × 10⁻⁴ L☉ |
| Radius | 0.0488 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 13h 18m 39.1s |
| Declination (J2000) | +21° 30′ 43″ |
| Space velocity (relative to the Sun) | 42.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.94. Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° 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 1765. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.6 million years.
The Sun seen from there
From a planet around SDSS J131839.06+213043.0, the Sun would look like a star of magnitude 9.35, 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 65018 10.2 light-years
- HIP 65579 11.2 light-years
- HIP 65781 13.3 light-years
- HIP 65759 14.0 light-years
- HIP 64386 16.7 light-years
- HIP 64399 18.2 light-years
- HIP 65899 19.4 light-years
- SDSS J131614.35+213329.9 19.7 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.