Gliese 625
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Draco |
Right ascension | 16h 25m 24.6233s[1] |
Declination | 54° 18′ 14.7658″[1] |
Apparent magnitude (V) | 10.17 |
Characteristics | |
Spectral type | M2.0V |
Astrometry | |
Proper motion (μ) | RA: 432.073±0.064[1] mas/yr Dec.: −171.668±0.059[1] mas/yr |
Parallax (π) | 154.4710 ± 0.0273 mas[1] |
Distance | 21.114 ± 0.004 ly (6.474 ± 0.001 pc) |
Other designations | |
Database references | |
SIMBAD | data |
GJ 625 (AC 54 1646-56) is a red dwarf star of spectral type M2.0V, located in the constellation Draco, 21.1 light-years from Earth.[1]
Planetary system
On May 18, 2017, a planet was detected orbiting AC 54 1646-56 by the HARPS-N telescope.[2] The planet, AC 54 1646-56b (GJ 625b), orbits on the inner edge of the circumstellar habitable zone of its star, and may support liquid water.
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 2.82±0.51 M🜨 | 0.078 | 14.628±0.013 | — | — | — |
References
- ^ a b c d e f Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ Suárez Mascareño, A.; et al. (2017). "HADES RV Programme with HARPS-N at TNG. V. A super-Earth on the inner edge of the habitable zone of the nearby M dwarf GJ 625". Astronomy and Astrophysics. 605. A92. arXiv:1705.06537. Bibcode:2017A&A...605A..92S. doi:10.1051/0004-6361/201730957. S2CID 119003137.