Star · M4V
WISE J125715.90+400854.2
WISE J125715.90+400854.2 is a main-sequence star of spectral type M4V in the constellation Canes Venatici, 57.1 light-years from the Sun.
| Constellation | Canes Venatici |
|---|---|
| Distance | 57.1 light-years (17.5 pc) |
| Apparent magnitude | magnitude 24.73 |
| Absolute magnitude | magnitude 23.51 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 6.17 × 10⁻⁷ L☉ |
| Radius | 0.00296 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 12h 57m 15.6s |
| Declination (J2000) | +40° 08′ 53″ |
| Space velocity (relative to the Sun) | 28.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 24.73. Visible from the whole Northern Hemisphere and south to latitude 50° S. North of latitude 50° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1969. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around WISE J125715.90+400854.2, the Sun would look like a star of magnitude 6.05, in the direction where our sky has the constellation Phoenix. 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.