Star · M4V
CWISE J205701.64-170407.3
CWISE J205701.64-170407.3 is a main-sequence star of spectral type M4V in the constellation Capricornus, 65.2 light-years from the Sun.
| Constellation | Capricornus |
|---|---|
| Distance | 65.2 light-years (20.0 pc) |
| Apparent magnitude | magnitude 26.08 |
| Absolute magnitude | magnitude 24.57 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.32 × 10⁻⁷ L☉ |
| Radius | 0.00181 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 20h 57m 01.3s |
| Declination (J2000) | −17° 04′ 08″ |
| Space velocity (relative to the Sun) | 32.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.08. Visible from the whole Southern Hemisphere and north to latitude 73° N. South of latitude 73° S it never sets. 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 1961. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.2 million years.
The Sun seen from there
From a planet around CWISE J205701.64-170407.3, the Sun would look like a star of magnitude 6.34, in the direction where our sky has the constellation Cancer. It would be visible 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.