Star · M4V
WISEA J151620.39+721745.4
WISEA J151620.39+721745.4 is a main-sequence star of spectral type M4V in the constellation Ursa Minor, 84.8 light-years from the Sun.
| Constellation | Ursa Minor |
|---|---|
| Distance | 84.8 light-years (26.0 pc) |
| Apparent magnitude | magnitude 27.84 |
| Absolute magnitude | magnitude 25.77 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 7.76 × 10⁻⁸ L☉ |
| Radius | 0.00105 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 15h 16m 21.4s |
| Declination (J2000) | +72° 17′ 38″ |
| Space velocity (relative to the Sun) | 96.1 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 27.84. Visible from the whole Northern Hemisphere and south to latitude 18° S. North of latitude 18° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1941. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.5 million years.
The Sun seen from there
From a planet around WISEA J151620.39+721745.4, the Sun would look like a star of magnitude 6.90, in the direction where our sky has the constellation Hydrus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3922 4.62 light-years
- GJ 3902 6.77 light-years
- Gl 580.2 7.59 light-years
- GJ 3951B 9.12 light-years
- PSO J243.9421+67.2075 10.9 light-years
- WISEA J145642.68+645009.7 11.3 light-years
- HIP 66578 12.1 light-years
- GJ 3826 12.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.