Star · M4V
SDSS J211846.77-001044.6
SDSS J211846.77-001044.6 is a main-sequence star of spectral type M4V in the constellation Aquarius, 267.5 light-years from the Sun.
| Constellation | Aquarius |
|---|---|
| Distance | 267.5 light-years (82.0 pc) |
| Apparent magnitude | magnitude 21.70 |
| Absolute magnitude | magnitude 17.13 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.21 × 10⁻⁴ L☉ |
| Radius | 0.0559 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 18m 46.8s |
| Declination (J2000) | −0° 10′ 45″ |
| Space velocity (relative to the Sun) | 26.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.70. Visible from the whole Southern Hemisphere and north to latitude 90° N. 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 1759. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.7 million years.
The Sun seen from there
From a planet around SDSS J211846.77-001044.6, the Sun would look like a star of magnitude 9.40, 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 104338 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.