Star · M4V
CWISE J105512.11+544328.3
CWISE J105512.11+544328.3 is a main-sequence star of spectral type M4V in the constellation Ursa Major, 22.5 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 22.5 light-years (6.90 pc) |
| Apparent magnitude | magnitude 26.34 |
| Absolute magnitude | magnitude 27.15 |
| Spectral type | M4V |
| Surface temperature | 2,980 K |
| Luminosity | 2.18 × 10⁻⁸ L☉ |
| Radius | 5.55 × 10⁻⁴ R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 10h 55m 14.7s |
| Declination (J2000) | +54° 43′ 32″ |
| Space velocity (relative to the Sun) | 50.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 26.34. Visible from the whole Northern Hemisphere and south to latitude 35° S. North of latitude 35° 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 2003. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 399 thousand years.
The Sun seen from there
From a planet around CWISE J105512.11+544328.3, the Sun would look like a star of magnitude 4.02, in the direction where our sky has the constellation Grus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.