Star · ?
GJ 4242A
GJ 4242A is a main-sequence star of spectral type ? in the constellation Piscis Austrinus, 63.3 light-years from the Sun.
| Constellation | Piscis Austrinus |
|---|---|
| Distance | 63.3 light-years (19.4 pc) |
| Apparent magnitude | magnitude 14.65 |
| Absolute magnitude | magnitude 13.21 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 0.00201 L☉ |
| Radius | 0.112 R☉ |
| Mass | 0.127 M☉ (estimated) |
| Right ascension (J2000) | 21h 58m 50.5s |
| Declination (J2000) | −32° 28′ 17″ |
| Space velocity (relative to the Sun) | 49.2 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.65. Visible from the whole Southern Hemisphere and north to latitude 58° N. South of latitude 58° S it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1963. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.1 million years.
The Sun seen from there
From a planet around GJ 4242A, the Sun would look like a star of magnitude 6.27, in the direction where our sky has the constellation Leo. 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.