Star · K2
GJ 3864A
GJ 3864A is a main-sequence star of spectral type K2 in the constellation Libra, 98.8 light-years from the Sun.
| Constellation | Libra |
|---|---|
| Distance | 98.8 light-years (30.3 pc) |
| Apparent magnitude | magnitude 9.32 |
| Absolute magnitude | magnitude 6.91 |
| Spectral type | K2 |
| Surface temperature | 4,370 K |
| Luminosity | 0.297 L☉ |
| Radius | 0.951 R☉ |
| Mass | 0.738 M☉ (estimated) |
| Right ascension (J2000) | 14h 44m 35.5s |
| Declination (J2000) | −22° 15′ 11″ |
| Space velocity (relative to the Sun) | 51.7 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 9.32. Visible from the whole Southern Hemisphere and north to latitude 68° N. South of latitude 68° S 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 1927. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.8 million years.
The Sun seen from there
From a planet around GJ 3864A, the Sun would look like a star of magnitude 7.24, in the direction where our sky has the constellation Aries. 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.