Star · M4V
ULAS J153156.73+033605.9
ULAS J153156.73+033605.9 is a main-sequence star of spectral type M4V in the constellation Serpens, 221.8 light-years from the Sun.
| Constellation | Serpens |
|---|---|
| Distance | 221.8 light-years (68.0 pc) |
| Apparent magnitude | magnitude 22.87 |
| Absolute magnitude | magnitude 18.71 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 5.16 × 10⁻⁵ L☉ |
| Radius | 0.0271 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 15h 31m 56.7s |
| Declination (J2000) | +3° 36′ 06″ |
| Space velocity (relative to the Sun) | 18.0 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.87. Visible from the whole Northern Hemisphere and south to latitude 86° S. 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 1804. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.9 million years.
The Sun seen from there
From a planet around ULAS J153156.73+033605.9, the Sun would look like a star of magnitude 8.99, 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):
- ULAS J153108.89+060111.1 15.9 light-years
- HIP 76915 16.4 light-years
- HIP 75923 19.1 light-years
- ULAS J153256.84-012511.0 19.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.