Star · M4V
ULAS J084302.02+001246.9
ULAS J084302.02+001246.9 is a main-sequence star of spectral type M4V in the constellation Hydra, 143.5 light-years from the Sun.
| Constellation | Hydra |
|---|---|
| Distance | 143.5 light-years (44.0 pc) |
| Apparent magnitude | magnitude 23.19 |
| Absolute magnitude | magnitude 19.97 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.61 × 10⁻⁵ L☉ |
| Radius | 0.0151 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 43m 02.1s |
| Declination (J2000) | +0° 12′ 47″ |
| Space velocity (relative to the Sun) | 30.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.19. Visible from the whole Southern Hemisphere and north to latitude 90° N. 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 1882. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.5 million years.
The Sun seen from there
From a planet around ULAS J084302.02+001246.9, the Sun would look like a star of magnitude 8.05, 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 41573 10.3 light-years
- ULAS J083408.92+040728.7 11.3 light-years
- HIP 44109 11.4 light-years
- ULAS J085342.94+000651.8 12.0 light-years
- HIP 41425 12.6 light-years
- HIP 43516 13.8 light-years
- HIP 41209 14.7 light-years
- HIP 41277 16.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.