Star · M4V
WISEA J201826.00-332207.3
WISEA J201826.00-332207.3 is a main-sequence star of spectral type M4V in the constellation Sagittarius, 241.4 light-years from the Sun.
| Constellation | Sagittarius |
|---|---|
| Distance | 241.4 light-years (74.0 pc) |
| Apparent magnitude | magnitude 22.83 |
| Absolute magnitude | magnitude 18.48 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 6.35 × 10⁻⁵ L☉ |
| Radius | 0.03 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 20h 18m 26.0s |
| Declination (J2000) | −33° 22′ 05″ |
| Space velocity (relative to the Sun) | 76.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.83. Visible from the whole Southern Hemisphere and north to latitude 57° N. South of latitude 57° S it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1785. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.3 million years.
The Sun seen from there
From a planet around WISEA J201826.00-332207.3, the Sun would look like a star of magnitude 9.18, in the direction where our sky has the constellation Lynx. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 99739 11.2 light-years
- HIP 99110 17.1 light-years
- HIP 99296 17.8 light-years
- HIP 100224 18.1 light-years
- HIP 100417 18.3 light-years
- HIP 102014 19.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.