Star · ?
GJ 3658
GJ 3658 is a main-sequence star of spectral type ? in the constellation Ursa Major, 107.1 light-years from the Sun.
| Constellation | Ursa Major |
|---|---|
| Distance | 107.1 light-years (32.8 pc) |
| Apparent magnitude | magnitude 12.74 |
| Absolute magnitude | magnitude 10.16 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.0334 L☉ |
| Radius | 0.457 R☉ |
| Mass | 0.427 M☉ (estimated) |
| Right ascension (J2000) | 11h 23m 21.2s |
| Declination (J2000) | +44° 48′ 38″ |
| Space velocity (relative to the Sun) | 54.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.74. Visible from the whole Northern Hemisphere and south to latitude 45° S. North of latitude 45° 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 1919. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.9 million years.
The Sun seen from there
From a planet around GJ 3658, the Sun would look like a star of magnitude 7.41, in the direction where our sky has the constellation Grus. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 56685 7.11 light-years
- HIP 57346 8.63 light-years
- HIP 56257 9.71 light-years
- WISE J114340.22+443123.8 11.3 light-years
- HIP 57683 11.8 light-years
- GJ 3673 11.8 light-years
- WISEA J112859.45+511016.8 12.2 light-years
- GJ 3640 13.2 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.