Star · ?
GJ 9453B
GJ 9453B is a main-sequence star of spectral type ? in the constellation Ursa Minor, 127.9 light-years from the Sun.
| Constellation | Ursa Minor |
|---|---|
| Distance | 127.9 light-years (39.2 pc) |
| Apparent magnitude | magnitude 13.47 |
| Absolute magnitude | magnitude 10.50 |
| Spectral type | ? |
| Surface temperature | 3,890 K |
| Luminosity | 0.0176 L☉ |
| Radius | 0.293 R☉ |
| Mass | 0.327 M☉ (estimated) |
| Right ascension (J2000) | 13h 34m 55.4s |
| Declination (J2000) | +74° 29′ 58″ |
| Space velocity (relative to the Sun) | 81.3 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.47. Visible from the whole Northern Hemisphere and south to latitude 16° S. North of latitude 16° 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 1898. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2.3 million years.
The Sun seen from there
From a planet around GJ 9453B, the Sun would look like a star of magnitude 7.80, in the direction where our sky has the constellation Hydrus. It would be invisible 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.