Star · M0V
SDSS J120308.77+373422.9
SDSS J120308.77+373422.9 is a main-sequence star of spectral type M0V in the constellation Ursa Major, 263.4 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 263.4 light-years (80.8 pc) |
| Apparent magnitude | magnitude 21.81 |
| Absolute magnitude | magnitude 17.27 |
| Spectral type | M0V |
| Surface temperature | 3,550 K |
| Luminosity | 5.56 × 10⁻⁵ L☉ |
| Radius | 0.0197 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 12h 03m 08.7s |
| Declination (J2000) | +37° 34′ 23″ |
| Space velocity (relative to the Sun) | 44.9 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.81. Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° 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 1763. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4.7 million years.
The Sun seen from there
From a planet around SDSS J120308.77+373422.9, the Sun would look like a star of magnitude 9.37, in the direction where our sky has the constellation Sculptor. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 59028 10.0 light-years
- HIP 59405 14.9 light-years
- HIP 57689 19.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.