| 释义 |
- Planetary system
- See also
- References
- External links
{{Starbox begin
| name = Gliese 849
}}{{Starbox observe
| epoch = J2000.0
| constell = Aquarius
| ra = {{RA|22|9|40.3444}}[1]
| dec = {{DEC|–4|38|26.6513}}[1]
| appmag_v = 10.42
}}{{Starbox character
| class = M3.5V
| r-i = 1.41
| v-r = 1.11
| b-v = 1.51
| u-b = 1.13
| variable =
}}{{Starbox astrometry
| radial_v = −12 ± 5
| prop_mo_ra = {{val|1132.534|0.081}}[1]
| prop_mo_dec = {{val|−22.125|0.083}}[1]
| parallax = 113.6000
| p_error = 0.0463
| parallax_footnote = [1]
| absmag_v = 10.70
}}{{Starbox detail
| age =
| metal = {{nowrap|+0.31 ± 0.17}}
| mass = 0.36
| radius = {{nowrap|0.52 ± 0.07}}
| temperature = {{nowrap|3,601 ± 19}}
| luminosity = 0.029
| gravity = 4.66
| rotation = {{Val|39.2|6.3|u=d}}[8]
}}{{Starbox catalog
| names = BD-05 5715, GCRV 13921, HIP 109388, LFT 1689, LHS 517, LPM 814, LTT 8889, NLTT 53078
}}{{Starbox reference
| Simbad = GJ+849
| NSTED = GJ+849
| ARICNS = 01809
}}
|- style="background-color: #A0B0FF;" colspan="3"
| Planet
|- bgcolor="#FFFAFA"
| Gliese 849b || data{{Starbox end}}Gliese 849 is a M3.5V red dwarf star approximately 29 light years away in the constellation of Aquarius. It has the first planet discovered orbiting a red dwarf with a semi-major axis greater than 0.21 AU.[9]Planetary systemIn late 2006, a long-period Jupiter-like planet was reported to be orbiting the red dwarf in a period just over 5 years in length. There was also a linear trend in the radial velocities which suggested another longer period companion.[10] The trend in the radial velocities was confirmed in 2013.[11] An orbit for the second planet was finally determined in 2015.[9] {{OrbitboxPlanet begin
| table_ref = [9]
}}{{OrbitboxPlanet
| exoplanet = b
| mass = {{val|0.911|0.036|p=>}}
| semimajor = {{val|2.39|0.082}}
| period = {{val|1924|15}}
| eccentricity = {{val|0.038|0.019}}
}}{{OrbitboxPlanet
| exoplanet = c
| mass = {{val|0.944|0.070|p=>}}
| semimajor = {{val|4.82|0.21}}
| period = {{val|5520|390}}
| eccentricity = {{val|0.087|0.056}}
}}{{Orbitbox end}}See also- List of star systems within 25–30 light-years
- Gliese 317
- Gliese 649
- Gliese 581
- List of extrasolar planets
References1. ^1 {{cite journal | title=The HARPS search for southern extra-solar planets. XXXI. The M-dwarf sample | url=https://www.aanda.org/articles/aa/full_html/2013/01/aa14704-10/aa14704-10.html | last1=Bonfils | first1=X. | last2=Delfosse | first2=X. | last3=Udry | first3=S. | last4=Forveille | first4=T. | last5=Mayor | first5=M. | last6=Perrier | first6=C. | last7=Bouchy | first7=F. | last8=Gillon | first8=M. | last9=Lovis | first9=C. | last10=Pepe | first10=F. | last11=Queloz | first11=D. | last12=Santos | first12=N. C. | last13=Ségransan | first13=D. | last14=Bertaux | first14=J.-L. | display-authors=1 | journal=Astronomy and Astrophysics | volume=549 | at=A109 | year=2013 | arxiv=1111.5019 | bibcode=2013A&A...549A.109B | doi=10.1051/0004-6361/201014704 }}
2. ^1 {{cite journal | title=A Long-Period Jupiter-Mass Planet Orbiting the Nearby M Dwarf GJ 849 | last1=Butler | first1=R. Paul | last2=Johnson | first2=John Asher | last3=Marcy | first3=Geoffrey W. | last4=Wright | first4=Jason T. | last5=Vogt | first5=Steven S. | last6=Fischer | first6=Debra A. | display-authors=1 | journal= Publications of the Astronomical Society of the Pacific| volume=118 |issue = 850| pages=1685–1689 | year=2006 | arxiv=astro-ph/0610179 | bibcode=2006PASP..118.1685B | doi=10.1086/510500 }}
3. ^1 2 3 {{cite journal | title=The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets | last1=Feng | first1=Y. Katherina | last2=Wright | first2=Jason T. | last3=Nelson | first3=Benjamin | last4=Wang | first4=Sharon X. | last5=Ford | first5=Eric B. | last6=Marcy | first6=Geoffrey W. | last7=Isaacson | first7=Howard | last8=Howard | first8=Andrew W. | displayauthors=1 | journal=The Astrophysical Journal | volume=800 | issue=1 | at=22 | year=2015 | arxiv=1501.00633 | bibcode=2015ApJ...800...22F | doi=10.1088/0004-637X/800/1/22 }}
4. ^1 2 3 4 5 {{Cite Gaia DR2|2627117287488522240}}
5. ^1 {{citation | display-authors=1 | last1=Suárez Mascareño | first1=A. | last2=Rebolo | first2=R. | last3=González Hernández | first3=J. I. | last4=Esposito | first4=M. | title=Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators | journal=Monthly Notices of the Royal Astronomical Society | volume=452 | issue=3 | pages=2745–2756 | date=September 2015 | doi=10.1093/mnras/stv1441 | bibcode=2015MNRAS.452.2745S | arxiv=1506.08039 | postscript=.}}
See table 3.
}}External links- {{cite web | url=http://exoplanet.eu/star.php?st=Gj+849 | title=Gj 849 | work=The Extrasolar Planets Encyclopedia}}
- {{cite web | url=http://www.solstation.com/stars/gl849.htm | title=BD-05 5715 / Gl 849 | work=Solstation}}
- {{cite web | url=http://aladin.u-strasbg.fr/AladinPreview?-c=22+09+40.3460-04+38+26.624&ident=LHS+++517&submit=Aladin+previewer | title=Image: Gliese 849 | work=Aladin Previewer}}
{{Stars of Aquarius}}{{Sky|22|09|40.3460|-|4|38|26.624|8774}}{{reddwarf-star-stub}} 6 : Aquarius (constellation)|Gliese and GJ objects|Hipparcos objects|M-type main-sequence stars|Planetary systems|Durchmusterung objects |