Star · M1
Groombridge 34
Groombridge 34 is a main-sequence star of spectral type M1 in the constellation Andromeda, 11.6 light-years from the Sun. It is orbited by 2 confirmed exoplanet(s).
| Other names | GJ 15 A · Gl 15A · HIP 1475 |
|---|---|
| Constellation | Andromeda |
| Distance | 11.6 light-years (3.56 pc) |
| Apparent magnitude | magnitude 8.09 |
| Absolute magnitude | magnitude 10.33 |
| Spectral type | M1 |
| Surface temperature | 3,610 K |
| Luminosity | 0.0221 L☉ |
| Radius | 0.38 R☉ |
| Mass | 0.38 M☉ |
| Metallicity [Fe/H] | -0.34 |
| Right ascension (J2000) | 0h 18m 22.7s |
| Declination (J2000) | +44° 01′ 22″ |
| Space velocity (relative to the Sun) | 50.6 km/s |
In the sky
Too faint for the naked eye (magnitude 8.09); binoculars will find it. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° 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 2014. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 206 thousand years.
The Sun seen from there
From a planet around Groombridge 34, the Sun would look like a star of magnitude 2.59, in the direction where our sky has the constellation Centaurus. It would be visible to the naked eye.
Planets
Neighbours
Its nearest neighbours in the catalogue (within 20 light-years):
Stellar parameters from the NASA Exoplanet Archive; position and brightness from the HYG / AT-HYG catalogue.