Star · ?
GJ 3156
GJ 3156 is a main-sequence star of spectral type ? in the constellation Aries, 91.2 light-years from the Sun.
| Constellation | Aries |
|---|---|
| Distance | 91.2 light-years (28.0 pc) |
| Apparent magnitude | magnitude 11.62 |
| Absolute magnitude | magnitude 9.39 |
| Spectral type | ? |
| Surface temperature | 3,660 K |
| Luminosity | 0.0669 L☉ |
| Radius | 0.644 R☉ |
| Mass | 0.509 M☉ (estimated) |
| Right ascension (J2000) | 2h 24m 46.1s |
| Declination (J2000) | +25° 58′ 34″ |
| Space velocity (relative to the Sun) | 29.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.62. Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1935. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1.6 million years.
The Sun seen from there
From a planet around GJ 3156, the Sun would look like a star of magnitude 7.06, in the direction where our sky has the constellation Hydra. It would be invisible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- HIP 11152 5.82 light-years
- 2MASSW J0208549+250048 6.90 light-years
- HIP 10505 8.32 light-years
- HIP 13065 9.68 light-years
- GJ 3166 9.88 light-years
- WISEA J022721.93+235654.3 10.2 light-years
- HIP 9788 10.6 light-years
- PSO J031.5651+20.9097 10.8 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.