Star · M4V
ULAS J100759.90-010031.1
ULAS J100759.90-010031.1 is a main-sequence star of spectral type M4V in the constellation Sextans, 166.3 light-years from the Sun.
| Constellation | Sextans |
|---|---|
| Distance | 166.3 light-years (51.0 pc) |
| Apparent magnitude | magnitude 26.18 |
| Absolute magnitude | magnitude 22.64 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.38 × 10⁻⁶ L☉ |
| Radius | 0.00442 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 07m 60.0s |
| Declination (J2000) | −1° 00′ 32″ |
| Space velocity (relative to the Sun) | 65.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.18. Visible from the whole Southern Hemisphere and north to latitude 89° N. 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 1860. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around ULAS J100759.90-010031.1, the Sun would look like a star of magnitude 8.37, 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):
- HIP 48365 13.6 light-years
- HIP 49910 14.8 light-years
- HIP 49615 15.8 light-years
- HIP 49694 16.6 light-years
- HIP 47966 18.2 light-years
- SDSS J103026.78+021306.4 18.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.