Star · M0V
SDSS J120916.20+542949.5
SDSS J120916.20+542949.5 is a main-sequence star of spectral type M0V in the constellation Ursa Major, 167.3 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 167.3 light-years (51.3 pc) |
| Apparent magnitude | magnitude 21.71 |
| Absolute magnitude | magnitude 18.16 |
| Spectral type | M0V |
| Surface temperature | 3,550 K |
| Luminosity | 2.47 × 10⁻⁵ L☉ |
| Radius | 0.0131 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 12h 09m 16.2s |
| Declination (J2000) | +54° 29′ 50″ |
| Space velocity (relative to the Sun) | 7.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.71. Visible from the whole Northern Hemisphere and south to latitude 36° S. North of latitude 36° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1859. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.0 million years.
The Sun seen from there
From a planet around SDSS J120916.20+542949.5, the Sun would look like a star of magnitude 8.38, in the direction where our sky has the constellation Phoenix. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 59180 6.64 light-years
- HIP 59176 7.14 light-years
- HIP 61750 14.2 light-years
- HIP 60115 15.4 light-years
- HIP 61044 16.2 light-years
- HIP 61148 17.9 light-years
- HIP 55840 18.4 light-years
- HIP 56622 19.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.