View source for Astronomy:GJ 625

{{Starbox begin
| name = AC 54 1646-56
}}
{{Starbox observe
| epoch = J2000
| constell = [[Astronomy:Draco (constellation)|Draco]]
| ra = {{RA|16|25|24.6233}}<ref name="Gaia DR2"/>
| dec = {{DEC|54|18|14.7658}}<ref name="Gaia DR2"/>
| appmag_v = 10.17
}}
{{Starbox character
| class = M2.0V
| b-v =
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v =
| prop_mo_ra = {{val|432.073|0.064}}<ref name="Gaia DR2"/>
| prop_mo_dec = {{val|−171.668|0.059}}<ref name="Gaia DR2"/>
| parallax = 154.4710
| p_error = 0.0273
| parallax_footnote = <ref name="Gaia DR2"/>
| absmag_v =
}}
{{Starbox catalog 
}}
{{Starbox reference
| Simbad = GJ+625
}}
{{Starbox end}}

'''GJ 625''' ('''AC 54 1646-56''') is a [[Astronomy:Red dwarf|red dwarf]] star of spectral type M2.0V, located in the constellation [[Astronomy:Draco (constellation)|Draco]], 21.1 [[Astronomy:Light-year|light-year]]s from Earth.<ref name="Gaia DR2"/>

==Planetary system==
On May 18, 2017, a planet was detected orbiting AC 54 1646-56 by the [[Astronomy:HARPS-N|HARPS-N]] telescope.<ref name="Suárez Mascareño2017"/> The planet, AC 54 1646-56b (GJ 625b), orbits on the inner edge of the [[Astronomy:Circumstellar habitable zone|circumstellar habitable zone]] of its star, and may support liquid water.

{{OrbitboxPlanet begin}}
{{OrbitboxPlanet
| exoplanet = b
| mass_earth =  2.82±0.51
| period = 14.628±0.013
| semimajor = 0.078
| eccentricity = 
}}
{{Orbitbox end}}

==References==
{{Reflist|refs=

<ref name="Gaia DR2">{{cite DR2|1428427236986209024}}</ref>

<ref name="Suárez Mascareño2017">{{cite journal | title=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 | url=https://www.aanda.org/articles/aa/full_html/2017/09/aa30957-17/aa30957-17.html | last1=Suárez Mascareño | first1=A. | last2=González Hernández | first2=J. I. | last3=Rebolo | first3=R. | last4=Velasco | first4=S. | last5=Toledo-Padrón | first5=B. | last6=Affer | first6=L. | last7=Perger | first7=M. | last8=Micela | first8=G. | last9=Ribas | first9=I. | last10=Maldonado | first10=J. | last11=Leto | first11=G. | last12=Zanmar Sanchez | first12=R. | last13=Scandariato | first13=G. | last14=Damasso | first14=M. | last15=Sozzetti | first15=A. | last16=Esposito | first16=M. | last17=Covino | first17=E. | last18=Maggio | first18=A. | last19=Lanza | first19=A. F. | last20=Desidera | first20=S. | last21=Rosich | first21=A. | last22=Bignamini | first22=A. | last23=Claudi | first23=R. | last24=Benatti | first24=S. | last25=Borsa | first25=F. | last26=Pedani | first26=M. | last27=Molinari | first27=E. | last28=Morales | first28=J. C. | last29=Herrero | first29=E. | last30=Lafarga | first30=M. | display-authors=1 | journal=Astronomy and Astrophysics | volume=605 | at=A92 | year=2017 | arxiv=1705.06537 | bibcode=2017A&A...605A..92S | doi=10.1051/0004-6361/201730957 }}</ref>

}}

{{Stars of Draco}}

[[Category:Draco (constellation)]]
[[Category:M-type main-sequence stars]]
[[Category:Gliese and GJ objects|0625]]
[[Category:Planetary systems with one confirmed planet]]


{{Sourceattribution|GJ 625|1}}