Star · M4V
SDSS J100016.92+321829.4
SDSS J100016.92+321829.4 is a main-sequence star of spectral type M4V in the constellation Leo, 199.0 light-years from the Sun.
| Constellation | Leo |
|---|---|
| Distance | 199.0 light-years (61.0 pc) |
| Apparent magnitude | magnitude 22.12 |
| Absolute magnitude | magnitude 18.19 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 8.29 × 10⁻⁵ L☉ |
| Radius | 0.0343 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 00m 17.1s |
| Declination (J2000) | +32° 18′ 31″ |
| Space velocity (relative to the Sun) | 140.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.12. Visible from the whole Northern Hemisphere and south to latitude 58° S. North of latitude 58° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1827. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.5 million years.
The Sun seen from there
From a planet around SDSS J100016.92+321829.4, the Sun would look like a star of magnitude 8.76, in the direction where our sky has the constellation Piscis Austrinus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 49658 6.43 light-years
- HIP 47652 13.6 light-years
- HIP 48435 13.9 light-years
- HIP 50120 14.2 light-years
- HIP 49060 14.4 light-years
- HIP 50411 14.9 light-years
- HIP 47987 16.2 light-years
- SDSS J093906.46+341257.5 17.4 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.