Star · M4V
ULAS J004030.42+091524.9
ULAS J004030.42+091524.9 is a main-sequence star of spectral type M4V in the constellation Pisces, 169.6 light-years from the Sun.
| Constellation | Pisces |
|---|---|
| Distance | 169.6 light-years (52.0 pc) |
| Apparent magnitude | magnitude 25.66 |
| Absolute magnitude | magnitude 22.08 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.31 × 10⁻⁶ L☉ |
| Radius | 0.00572 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 0h 40m 30.6s |
| Declination (J2000) | +9° 15′ 25″ |
| Space velocity (relative to the Sun) | 26.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 25.66. Visible from the whole Northern Hemisphere and south to latitude 81° S. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1856. 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 J004030.42+091524.9, the Sun would look like a star of magnitude 8.41, in the direction where our sky has the constellation Virgo. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 3119 7.54 light-years
- HIP 2373 10.2 light-years
- ULAS J010324.69+092746.5 16.7 light-years
- HIP 2039 17.1 light-years
- HIP 2847 18.3 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.