Star · M4V
WISE J172134.46+111739.4
WISE J172134.46+111739.4 is a main-sequence star of spectral type M4V in the constellation Ophiuchus, 64.6 light-years from the Sun.
| Constellation | Ophiuchus |
|---|---|
| Distance | 64.6 light-years (19.8 pc) |
| Apparent magnitude | magnitude 24.16 |
| Absolute magnitude | magnitude 22.68 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.33 × 10⁻⁶ L☉ |
| Radius | 0.00435 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 17h 21m 34.5s |
| Declination (J2000) | +11° 17′ 38″ |
| Space velocity (relative to the Sun) | 15.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 24.16. Visible from the whole Northern Hemisphere and south to latitude 79° S. North of latitude 79° N it never sets. It stands highest at midnight in June, 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 1.1 million years.
The Sun seen from there
From a planet around WISE J172134.46+111739.4, the Sun would look like a star of magnitude 6.31, in the direction where our sky has the constellation Lepus. 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.