Star · M4V
ULAS J081918.58+210310.4
ULAS J081918.58+210310.4 is a main-sequence star of spectral type M4V in the constellation Cancer, 88.1 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 88.1 light-years (27.0 pc) |
| Apparent magnitude | magnitude 24.45 |
| Absolute magnitude | magnitude 22.29 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.90 × 10⁻⁶ L☉ |
| Radius | 0.00519 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 19m 18.6s |
| Declination (J2000) | +21° 03′ 13″ |
| Space velocity (relative to the Sun) | 24.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 24.45. Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1938. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around ULAS J081918.58+210310.4, the Sun would look like a star of magnitude 6.99, in the direction where our sky has the constellation Capricornus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- Gl 305.1 6.42 light-years
- 2MASS J08234818+2428577 8.53 light-years
- Tegmine 9.98 light-years
- 2MASSW J0829066+145622 10.0 light-years
- SDSS J081110.35+185527.9 10.2 light-years
- μ² Cnc 11.1 light-years
- SDSS J083506.16+195304.4 11.6 light-years
- GJ 3471 11.9 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.