Star · M4V
CWISE J203859.15-570110.3
CWISE J203859.15-570110.3 is a main-sequence star of spectral type M4V in the constellation Indus, 104.4 light-years from the Sun.
| Constellation | Indus |
|---|---|
| Distance | 104.4 light-years (32.0 pc) |
| Apparent magnitude | magnitude 26.53 |
| Absolute magnitude | magnitude 24.00 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 3.93 × 10⁻⁷ L☉ |
| Radius | 0.00236 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 20h 38m 58.1s |
| Declination (J2000) | −57° 01′ 10″ |
| Space velocity (relative to the Sun) | 86.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.53. Visible from the whole Southern Hemisphere and north to latitude 33° N. South of latitude 33° 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 1922. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around CWISE J203859.15-570110.3, the Sun would look like a star of magnitude 7.36, in the direction where our sky has the constellation Ursa Major. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.