| 词条 | HD 213240 |
| 释义 |
| name = HD 213240 | epoch = J2000.0 | constell = Grus | ra = {{RA|22|31|00.3672}} | dec = {{DEC|−49|25|59.773}} | appmag_v = 6.80 | absmag_v = 3.75 | dist_ly = 132.91 | dist_pc = 40.75 | spectral = G0/G1V | names = CD−50 13701, HIP 111143, LTT 9047, SAO 231175 | Simbad = HD+213240 }}HD 213240 is a yellow main sequence star located approximately 133 light years (41 parsecs) away in the constellation Grus. The magnitudes were m=6.80 and M=3.75. It is a metal-rich star and more evolved than our sun. Its age has been calculated as being anywhere from 2.7 to 4.6 billion years.[1] A red dwarf companion star was detected in 2005 with a projected separation of 3898 AU.[1] Planetary systemThe Geneva extrasolar planet search team discovered a planet orbiting this star in 2001.[3] {{OrbitboxPlanet begin| table_ref = }}{{OrbitboxPlanet | exoplanet = b | mass = >4.72 ± 0.40 | period = 882.7 ± 7.6 | semimajor = 1.92 ± 0.11 | eccentricity = 0.421 ± 0.015 }}{{Orbitbox end}} See also
References1. ^1 2 {{cite journal | url=http://www.aanda.org/articles/aa/full/2005/36/aa2297-04/aa2297-04.html | author=Mugrauer | title=Four New Wide Binaries Among Exoplanet Host Stars | journal=Astronomy and Astrophysics |date=2005 |volume=440 | issue=3 |pages=1051–1060 | doi=10.1051/0004-6361:20042297 | last2=Neuhäuser | first2=R. | last3=Seifahrt | first3=A. | last4=Mazeh | first4=T. | last5=Guenther | first5=E. | bibcode=2005A&A...440.1051M|arxiv = astro-ph/0507101 }} [1][2]2. ^1 {{cite journal | title=The CORALIE survey for southern extra-solar planets VI. New long period giant planets around HD 28185 and HD 213240 | url=http://www.aanda.org/articles/aa/full/2001/45/aah3054/aah3054.html | last1=Santos | first1=N. C. | last2=Mayor | first2=M. | last3=Naef | first3=D. | last4=Pepe | first4=F. | last5=Queloz | first5=D. | last6=Udry | first6=S. | last7=Burnet | first7=M. | display-authors=1 | journal=Astronomy and Astrophysics | volume=379 | issue=3 | pages=999–1004 |date=2001 | bibcode=2001A&A...379..999S | doi=10.1051/0004-6361:20011366 | arxiv=astro-ph/0106255 }} }} External links
6 : G-type main-sequence stars|Grus (constellation)|Henry Draper Catalogue objects|Hipparcos objects|Planetary systems|Durchmusterung objects |
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