Star · M3V
Gl 109
Gl 109 is a main-sequence star of spectral type M3V in the constellation Aries, 25.1 light-years from the Sun.
| Other names | HIP 12781 |
|---|---|
| Constellation | Aries |
| Distance | 25.1 light-years (7.68 pc) |
| Apparent magnitude | magnitude 10.55 |
| Absolute magnitude | magnitude 11.12 |
| Spectral type | M3V |
| Surface temperature | 3,750 K |
| Luminosity | 0.0119 L☉ |
| Radius | 0.258 R☉ |
| Mass | 0.276 M☉ (estimated) |
| Right ascension (J2000) | 2h 44m 15.6s |
| Declination (J2000) | +25° 31′ 24″ |
| Space velocity (relative to the Sun) | 45.6 km/s |
In the sky
A telescope is needed to see it: its apparent magnitude is 10.55. 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 2001. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 444 thousand years.
The Sun seen from there
From a planet around Gl 109, the Sun would look like a star of magnitude 4.26, in the direction where our sky has the constellation Hydra. It would be visible to the naked eye.
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
- 107 Psc 6.59 light-years
- Gl 102 7.62 light-years
- GJ 3146 7.93 light-years
- 268 G. Cet 8.05 light-years
- Gl 105B 8.05 light-years
- WISEPA J041022.71+150248.5 9.83 light-years
- PSO J043.5395+02.3995 9.91 light-years
- GJ 3128 10.0 light-years
Position, brightness and colour from the HYG / AT-HYG catalogue; temperature, luminosity, radius and mass are approximate values computed from these observations.