Star · ?
GJ 3015B
GJ 3015B is a main-sequence star of spectral type ? in the constellation Cepheus, 53.5 light-years from the Sun.
| Constellation | Cepheus |
|---|---|
| Distance | 53.5 light-years (16.4 pc) |
| Apparent magnitude | magnitude 17.40 |
| Absolute magnitude | magnitude 16.33 |
| Spectral type | ? |
| Surface temperature | 3,650 K |
| Luminosity | 1.14 × 10⁻⁴ L☉ |
| Radius | 0.0267 R☉ |
| Mass | 0.075 M☉ (estimated) |
| Right ascension (J2000) | 0h 13m 41.2s |
| Declination (J2000) | +80° 39′ 55″ |
| Space velocity (relative to the Sun) | 22.5 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 17.40. Visible from the whole Northern Hemisphere and south to latitude 9° S. North of latitude 9° N it never sets.
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 948 thousand years.
The Sun seen from there
From a planet around GJ 3015B, the Sun would look like a star of magnitude 5.90, in the direction where our sky has the constellation Chamaeleon. 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.