Star · M4V
SDSS J134525.57+521634.0
SDSS J134525.57+521634.0 is a main-sequence star of spectral type M4V in the constellation Ursa Major, 215.3 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 215.3 light-years (66.0 pc) |
| Apparent magnitude | magnitude 22.45 |
| Absolute magnitude | magnitude 18.35 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 7.16 × 10⁻⁵ L☉ |
| Radius | 0.0319 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 13h 45m 25.6s |
| Declination (J2000) | +52° 16′ 34″ |
| Space velocity (relative to the Sun) | 40.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 22.45. Visible from the whole Northern Hemisphere and south to latitude 38° S. North of latitude 38° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1811. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.8 million years.
The Sun seen from there
From a planet around SDSS J134525.57+521634.0, the Sun would look like a star of magnitude 8.93, in the direction where our sky has the constellation Eridanus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 67818 7.51 light-years
- SDSS J140601.47+524931.0 14.9 light-years
- HIP 68664 17.6 light-years
- HIP 64890 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.