Star · M4V
SDSS J214046.55+011259.7
SDSS J214046.55+011259.7 is a main-sequence star of spectral type M4V in the constellation Aquarius, 146.8 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 146.8 light-years (45.0 pc) |
| Apparent magnitude | magnitude 21.39 |
| Absolute magnitude | magnitude 18.12 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 8.84 × 10⁻⁵ L☉ |
| Radius | 0.0354 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 40m 46.6s |
| Declination (J2000) | +1° 12′ 59″ |
| Space velocity (relative to the Sun) | 47.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.39. Visible from the whole Northern Hemisphere and south to latitude 89° S. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1879. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around SDSS J214046.55+011259.7, the Sun would look like a star of magnitude 8.10, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 107020 8.37 light-years
- HIP 106335 9.11 light-years
- HIP 106439 10.8 light-years
- HIP 105864 11.4 light-years
- HIP 108473 13.6 light-years
- BD+05 4868 A 14.9 light-years
- GJ 4231 16.2 light-years
- HIP 106942 17.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.