Star · ?
GJ 3815
GJ 3815 is a main-sequence star of spectral type ? in the constellation Draco, 53.1 light-years from the Sun.
| Constellation | Draco |
|---|---|
| Distance | 53.1 light-years (16.3 pc) |
| Apparent magnitude | magnitude 15.69 |
| Absolute magnitude | magnitude 14.63 |
| Spectral type | ? |
| Surface temperature | 3,280 K |
| Luminosity | 0.00106 L☉ |
| Radius | 0.101 R☉ |
| Mass | 0.0963 M☉ (estimated) |
| Right ascension (J2000) | 13h 52m 52.4s |
| Declination (J2000) | +66° 48′ 59″ |
| Space velocity (relative to the Sun) | 55.8 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.69. Visible from the whole Northern Hemisphere and south to latitude 23° S. North of latitude 23° N 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 1973. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 941 thousand years.
The Sun seen from there
From a planet around GJ 3815, the Sun would look like a star of magnitude 5.89, in the direction where our sky has the constellation Hydrus. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- WISEPC J132004.16+603426.2 6.76 light-years
- WISEA J125721.01+715349.3 7.33 light-years
- GJ 3704 9.62 light-years
- GJ 3890 9.98 light-years
- GJ 3684 11.4 light-years
- GJ 463 11.7 light-years
- SDSS J121440.95+631643.4 11.8 light-years
- GJ 3861 12.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.