Gliese 414
Gliese 414, also known as GJ 414, is a binary system made up of an orange dwarf and a red dwarf, located about 39 light years from Earth, in the constellation Ursa Major. With an apparent magnitude of 8.31, it is not visible to the naked eye. The primary component of the system has two known exoplanets.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ursa Major |
| GJ 414 A | |
| Right ascension | 11h 11m 05.17s |
| Declination | +30° 26′ 45.7″ |
| Apparent magnitude (V) | 8.864±0.012 |
| GJ 414 B | |
| Right ascension | 11h 11m 02.54s |
| Declination | +30° 26′ 41.3″ |
| Apparent magnitude (V) | 10 |
| Characteristics | |
| GJ 414 A | |
| Spectral type | K7V |
| B−V color index | 1.255 |
| Variable type | None |
| GJ 414 B | |
| Spectral type | M2V |
| B−V color index | 2.41±0.34 |
| Variable type | None |
| Astrometry | |
| GJ 414 A | |
| Radial velocity (Rv) | −16.63 km/s |
| Proper motion (μ) | RA: 591.622±0.0812 mas/yr Dec.: −197.247±0.0911 mas/yr |
| Parallax (π) | 84.1766 mas |
| Distance | 38.76±0.22 ly (11.889±0.067 pc) |
| GJ 414 B | |
| Radial velocity (Rv) | −15.34 km/s |
| Proper motion (μ) | RA: 604.831±0.0806 mas/yr Dec.: −206.442±0.0751 mas/yr |
| Parallax (π) | 84.1554 mas |
| Distance | 38.7±0.00269 ly (11.8728±0.00825 pc) |
| Details | |
| GJ 414 A | |
| Mass | 0.65±0.028 M☉ |
| Radius | 0.679±0.027 R☉ |
| Luminosity | 0.119±0.05 L☉ |
| Habitable zone inner limit | 0.37 AU |
| Habitable zone outer limit | 0.70 AU |
| Temperature | 4120±70 K |
| Metallicity [Fe/H] | 0.24±0.09 dex |
| Rotational velocity (v sin i) | 3 km/s |
| Age | 12.4±5.2 Gyr |
| GJ 414 B | |
| Mass | 0.542±0.022 M☉ |
| Radius | 0.548±0.017 R☉ |
| Luminosity | 0.05 L☉ |
| Temperature | 3663±70 K |
| Metallicity [Fe/H] | 0.08±0.09 dex |
| Age | 11.2±5.9 Gyr |
| Other designations | |
| Position (relative to Gliese 414 A) | |
| Component | Gliese 414 B |
| Angular distance | 34.34″ |
| Projected separation | 408 AU |
| Database references | |
| SIMBAD | data |
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