Star · M3V
WISE J213512.63+731236.8
WISE J213512.63+731236.8 is a main-sequence star of spectral type M3V in the constellation Cepheus, 79.2 light-years from the Sun.
| Constellation | Cepheus |
|---|---|
| Distance | 79.2 light-years (24.3 pc) |
| Apparent magnitude | magnitude 21.87 |
| Absolute magnitude | magnitude 19.94 |
| Spectral type | M3V |
| Surface temperature | 3,190 K |
| Luminosity | 9.63 × 10⁻⁶ L☉ |
| Radius | 0.0102 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 21h 35m 13.1s |
| Declination (J2000) | +73° 12′ 38″ |
| Space velocity (relative to the Sun) | 39.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.87. Visible from the whole Northern Hemisphere and south to latitude 17° S. North of latitude 17° N 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 1947. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.4 million years.
The Sun seen from there
From a planet around WISE J213512.63+731236.8, the Sun would look like a star of magnitude 6.76, in the direction where our sky has the constellation Carina. 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.