Star · ?
GJ 4105
GJ 4105 is a main-sequence star of spectral type ? in the constellation Lyra, 58.5 light-years from the Sun.
| Constellation | Lyra |
|---|---|
| Distance | 58.5 light-years (17.9 pc) |
| Apparent magnitude | magnitude 12.01 |
| Absolute magnitude | magnitude 10.74 |
| Spectral type | ? |
| Surface temperature | 3,710 K |
| Luminosity | 0.0179 L☉ |
| Radius | 0.325 R☉ |
| Mass | 0.33 M☉ (estimated) |
| Right ascension (J2000) | 19h 12m 29.0s |
| Declination (J2000) | +35° 33′ 45″ |
| Space velocity (relative to the Sun) | 22.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.01. Visible from the whole Northern Hemisphere and south to latitude 54° S. North of latitude 54° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1968. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.0 million years.
The Sun seen from there
From a planet around GJ 4105, the Sun would look like a star of magnitude 6.10, in the direction where our sky has the constellation Puppis. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEP J190648.47+401106.8 6.05 light-years
- GJ 4113 6.07 light-years
- WISE J191915.54+304558.4 8.17 light-years
- Gl 758 8.18 light-years
- GJ 4109 8.47 light-years
- GJ 4124 8.72 light-years
- GJ 1241 9.77 light-years
- Gaia J195557.27+321518.2 9.89 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.