| 词条 | HD 4308 |
| 释义 |
| name = HD 4308 }}{{Starbox observe | epoch = J2000 | ra = {{RA|00|44|39.2675}}[1] | dec = {{DEC|–65|38|58.2825}}[1] | appmag_v = 6.54[3] | constell = Tucana }}{{Starbox character | class = G6V[3] | appmag_1_passband = B | appmag_1 = ~7.19[3] | appmag_2_passband = V | appmag_2 = ~6.54[3] | appmag_3_passband = J | appmag_3 = 5.366 ±0.024[3] | appmag_4_passband = H | appmag_4 = 5.101 ±0.016[3] | appmag_5_passband = K | appmag_5 = 4.945 ±0.020[3] }}{{Starbox astrometry | radial_v = 97.7 ± 5 | prop_mo_ra = {{val|157.504|0.041}}[1] | prop_mo_dec = {{val|−741.599|0.040}}[1] | parallax = 45.3930 | p_error = 0.0220 | parallax_footnote = [1] | absmag_v = }}{{Starbox detail | mass = 0.95 ± 0.05 | radius = 1.04 ± 0.03 | gravity = 4.38 ± 0.02 | luminosity = 1.03 ± 0.01 | temperature = 5714 ± 61 | metal = -0.31 | age_gyr = 1.6 ± 4.0 }}{{Starbox catalog | names = Gliese 31.5, GJ 9028, GC 897, GCRV 50662, HIP 3497, LFT 71, LHS 1139, LPM 40, LTT 416, SAO 248244, 2MASS J00443925-6538581, TYC 8847-598-1, PPM 352003 }}{{Starbox reference | Simbad = HD+4308 | ARICNS = 00063 | EPE = HD+4308 }}{{Starbox end}}HD 4308 is a 6th magnitude star located approximately 72 light years away in the southern constellation of Tucana.[1] Planetary systemIn 2005, a low-mass planet was found in orbit around this star using the radial velocity method with the HARPS spectrograph. Unusual for a star with planets, HD 4308 has a metallicity lower than that of the Sun.[20] {{OrbitboxPlanet begin| table_ref = [20] }}{{OrbitboxPlanet | exoplanet = b | mass = >0.0442 | period = 15.56 ± 0.02 | semimajor = 0.115 | eccentricity = 0.00 ± 0.01 }}{{Orbitbox end}} See also
References1. ^1 2 3 4 5 6 7 {{cite web| url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=HD+4308 | title =SIMBAD query result: LHS 1139 -- High proper-motion Star | work=SIMBAD| publisher=Centre de Données astronomiques de Strasbourg| accessdate=2009-05-23 }} [2][3]2. ^1 2 3 4 5 {{Cite Gaia DR2|4708607629114652032}} 3. ^1 2 {{cite journal | title=The HARPS search for southern extra-solar planets V. A 14 Earth-masses planet orbiting HD 4308 | url=http://www.aanda.org/articles/aa/full/2006/07/aa4084-05/aa4084-05.html | last1=Udry | first1=S. | last2=Mayor | first2=M. | last3=Benz | first3=W. | last4=Bertaux | first4=J.-L. | last5=Bouchy | first5=F. | last6=Lovis | first6=C. | last7=Mordasini | first7=C. | last8=Pepe | first8=F. | last9=Queloz | first9=D. | display-authors=1 | journal=Astronomy and Astrophysics | volume=447 | issue=1 | pages=361–367 | year=2006 | arxiv=astro-ph/0510354 | bibcode=2006A&A...447..361U | doi=10.1051/0004-6361:20054084 }} }} External links
| url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+4308 | title=HD 4308 | work=Exoplanets | accessdate=2009-05-23}}{{Sky|00|44|39.2677|-|65|38|58.280|71.39}}{{Stars of Tucana}}{{main-star-stub}} 7 : G-type main-sequence stars|Henry Draper Catalogue objects|Hipparcos objects|Tucana (constellation)|Planetary systems|Durchmusterung objects|Gliese and GJ objects |
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