Star · M4V
SDSS J082502.70+172249.6
SDSS J082502.70+172249.6 is a main-sequence star of spectral type M4V in the constellation Cancer, 257.7 light-years from the Sun.
| Constellation | Cancer |
|---|---|
| Distance | 257.7 light-years (79.0 pc) |
| Apparent magnitude | magnitude 22.25 |
| Absolute magnitude | magnitude 17.76 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 1.23 × 10⁻⁴ L☉ |
| Radius | 0.0418 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 25m 02.7s |
| Declination (J2000) | +17° 22′ 50″ |
| Space velocity (relative to the Sun) | 32.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.25. Visible from the whole Northern Hemisphere and south to latitude 73° S. North of latitude 73° 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 1768. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.6 million years.
The Sun seen from there
From a planet around SDSS J082502.70+172249.6, the Sun would look like a star of magnitude 9.32, 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):
- SDSS J082346.99+154947.4 9.71 light-years
- HIP 42057 15.2 light-years
- SDSS J083652.36+183544.9 15.4 light-years
- HIP 42187 16.7 light-years
- K2-146 18.7 light-years
- SDSS J083759.75+195727.7 19.4 light-years
- HIP 39816 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.