Star · M4V
ULAS J161938.12+300756.4
ULAS J161938.12+300756.4 is a main-sequence star of spectral type M4V in the constellation Corona Borealis, 208.7 light-years from the Sun.
| Constellation | Corona Borealis |
|---|---|
| Distance | 208.7 light-years (64.0 pc) |
| Apparent magnitude | magnitude 25.95 |
| Absolute magnitude | magnitude 21.92 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.68 × 10⁻⁶ L☉ |
| Radius | 0.00616 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 16h 19m 38.0s |
| Declination (J2000) | +30° 07′ 56″ |
| Space velocity (relative to the Sun) | 71.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.95. Visible from the whole Northern Hemisphere and south to latitude 60° S. North of latitude 60° 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 1817. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.7 million years.
The Sun seen from there
From a planet around ULAS J161938.12+300756.4, the Sun would look like a star of magnitude 8.86, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 2MASS J16123860+3126489 8.02 light-years
- HIP 80118 10.7 light-years
- HIP 80279 13.3 light-years
- HIP 78700 14.7 light-years
- HIP 81459 14.8 light-years
- HIP 79441 15.3 light-years
- HIP 80930 16.9 light-years
- HIP 78450 18.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.