Star · M2V
SDSS J084519.34+542031.7
SDSS J084519.34+542031.7 is a main-sequence star of spectral type M2V in the constellation Ursa Major, 178.1 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 178.1 light-years (54.6 pc) |
| Apparent magnitude | magnitude 21.48 |
| Absolute magnitude | magnitude 17.79 |
| Spectral type | M2V |
| Surface temperature | 3,260 K |
| Luminosity | 5.94 × 10⁻⁵ L☉ |
| Radius | 0.0241 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 8h 45m 19.3s |
| Declination (J2000) | +54° 20′ 27″ |
| Space velocity (relative to the Sun) | 69.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.48. 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 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 1848. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.2 million years.
The Sun seen from there
From a planet around SDSS J084519.34+542031.7, the Sun would look like a star of magnitude 8.52, in the direction where our sky has the constellation Indus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 43630 8.99 light-years
- HIP 41637 12.1 light-years
- HIP 41993 13.2 light-years
- HIP 41152 14.8 light-years
- HIP 44607 14.8 light-years
- HIP 41894 17.6 light-years
- SDSS J084106.85+603506.3 19.4 light-years
- HIP 42773 19.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.