Star · K9V
SDSS J122818.54+583342.3
SDSS J122818.54+583342.3 is a main-sequence star of spectral type K9V in the constellation Ursa Major, 204.7 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 204.7 light-years (62.8 pc) |
| Apparent magnitude | magnitude 21.59 |
| Absolute magnitude | magnitude 17.60 |
| Spectral type | K9V |
| Surface temperature | 3,730 K |
| Luminosity | 3.14 × 10⁻⁵ L☉ |
| Radius | 0.0134 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 12h 28m 18.6s |
| Declination (J2000) | +58° 33′ 43″ |
| Space velocity (relative to the Sun) | 62.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 21.59. Visible from the whole Northern Hemisphere and south to latitude 31° S. North of latitude 31° 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 1821. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 3.6 million years.
The Sun seen from there
From a planet around SDSS J122818.54+583342.3, the Sun would look like a star of magnitude 8.82, in the direction where our sky has the constellation Tucana. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 61203 6.01 light-years
- HIP 59474 11.1 light-years
- HIP 60443 14.3 light-years
- HIP 59937 14.9 light-years
- HIP 60946 16.5 light-years
- 2MASS J13023811+5650212 17.6 light-years
- HIP 62402 18.6 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.