Star · ?
GJ 4129
GJ 4129 is a main-sequence star of spectral type ? in the constellation Aquila, 50.8 light-years from the Sun.
| Constellation | Aquila |
|---|---|
| Distance | 50.8 light-years (15.6 pc) |
| Apparent magnitude | magnitude 11.95 |
| Absolute magnitude | magnitude 10.99 |
| Spectral type | ? |
| Surface temperature | 3,720 K |
| Luminosity | 0.014 L☉ |
| Radius | 0.285 R☉ |
| Mass | 0.297 M☉ (estimated) |
| Right ascension (J2000) | 19h 58m 15.6s |
| Declination (J2000) | +2° 02′ 01″ |
| Space velocity (relative to the Sun) | 65.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.95. Visible from the whole Northern Hemisphere and south to latitude 88° S. 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 1975. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 902 thousand years.
The Sun seen from there
From a planet around GJ 4129, the Sun would look like a star of magnitude 5.79, in the direction where our sky has the constellation Monoceros. 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.