Star · M4V
ULAS J104355.37+104803.4
ULAS J104355.37+104803.4 is a main-sequence star of spectral type M4V in the constellation Leo, 146.8 light-years from the Sun.
| Constellation | Leo |
|---|---|
| Distance | 146.8 light-years (45.0 pc) |
| Apparent magnitude | magnitude 25.73 |
| Absolute magnitude | magnitude 22.46 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.62 × 10⁻⁶ L☉ |
| Radius | 0.0048 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 43m 55.4s |
| Declination (J2000) | +10° 48′ 04″ |
| Space velocity (relative to the Sun) | 30.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.73. 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 February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1879. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.6 million years.
The Sun seen from there
From a planet around ULAS J104355.37+104803.4, the Sun would look like a star of magnitude 8.10, in the direction where our sky has the constellation Aquarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- SDSS J103309.11+121626.0 9.71 light-years
- HIP 53737 11.1 light-years
- HIP 51208 12.7 light-years
- PSO J162.0614+13.9756 13.2 light-years
- 59 Leo 17.2 light-years
- HIP 53725 18.1 light-years
- SDSS J104625.76+042441.0 18.7 light-years
- SDSS J103405.67+035016.3 18.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.