Star · M4V
ULAS J223917.13+073416.0
ULAS J223917.13+073416.0 is a main-sequence star of spectral type M4V in the constellation Pegasus, 169.6 light-years from the Sun.
| Constellation | Pegasus |
|---|---|
| Distance | 169.6 light-years (52.0 pc) |
| Apparent magnitude | magnitude 26.29 |
| Absolute magnitude | magnitude 22.71 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.29 × 10⁻⁶ L☉ |
| Radius | 0.00428 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 22h 39m 16.6s |
| Declination (J2000) | +7° 34′ 13″ |
| Space velocity (relative to the Sun) | 29.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.29. Visible from the whole Northern Hemisphere and south to latitude 82° S. It stands highest at midnight in August, 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 J223917.13+073416.0, the Sun would look like a star of magnitude 8.41, in the direction where our sky has the constellation Sextans. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 112073 7.83 light-years
- 37 Peg 11.8 light-years
- ULAS J225624.82+062152.9 13.1 light-years
- HIP 110349 14.1 light-years
- ULAS J225540.22+061412.9 14.5 light-years
- HIP 110776 15.2 light-years
- ULAS J230049.08+070338.0 16.4 light-years
- HIP 110761 17.1 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.