Star · M4V
SDSS J081828.75+430639.8
SDSS J081828.75+430639.8 is a main-sequence star of spectral type M4V in the constellation Lynx, 293.5 light-years from the Sun.
| Constellation | Lynx |
|---|---|
| Distance | 293.5 light-years (90.0 pc) |
| Apparent magnitude | magnitude 23.43 |
| Absolute magnitude | magnitude 18.66 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 5.40 × 10⁻⁵ L☉ |
| Radius | 0.0277 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 18m 28.8s |
| Declination (J2000) | +43° 06′ 40″ |
| Space velocity (relative to the Sun) | 132.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 23.43. Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° 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 1732. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5.2 million years.
The Sun seen from there
From a planet around SDSS J081828.75+430639.8, the Sun would look like a star of magnitude 9.60, in the direction where our sky has the constellation Sagittarius. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 40098 7.63 light-years
- HIP 41225 12.5 light-years
- HIP 41185 17.5 light-years
- HIP 40729 18.5 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.