Star · M4 V
Gliese 12
Gliese 12 is a main-sequence star of spectral type M4 V in the constellation Pisces, 39.7 light-years from the Sun. It is orbited by 1 confirmed exoplanet(s).
| Other names | Gl 12 |
|---|---|
| Constellation | Pisces |
| Distance | 39.7 light-years (12.2 pc) |
| Apparent magnitude | magnitude 12.58 |
| Absolute magnitude | magnitude 12.15 |
| Spectral type | M4 V |
| Surface temperature | 3,330 K |
| Luminosity | 0.00728 L☉ |
| Radius | 0.265 R☉ |
| Mass | 0.255 M☉ |
| Age | 7.0 billion years |
| Metallicity [Fe/H] | -0.24 |
| Right ascension (J2000) | 0h 15m 48.6s |
| Declination (J2000) | +13° 33′ 21″ |
| Space velocity (relative to the Sun) | 40.4 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.58. Visible from the whole Northern Hemisphere and south to latitude 76° S. North of latitude 76° N it never sets. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 1986. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 704 thousand years.
The Sun seen from there
From a planet around Gliese 12, the Sun would look like a star of magnitude 5.26, in the direction where our sky has the constellation Corvus. It would be visible to the naked eye.
Planets
- Gliese 12 b 12.8-day orbit · 0.93 R⊕
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- GJ 3039 5.26 light-years
- GJ 4368 5.77 light-years
- HD 3651 7.18 light-years
- GJ 1014 8.48 light-years
- WISE J004024.88+090054.8 8.97 light-years
- ULAS J232123.79+135454.9 9.11 light-years
- 85 Peg 9.67 light-years
- ι Psc 9.96 light-years
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.