| 词条 | 14 Herculis |
| 释义 |
| name = 14 Herculis }}{{Starbox observe | epoch = J2000.0 | constell = Hercules | ra = {{RA|16|10|24.3153}}[1] | dec = {{DEC|+43|49|03.4987}}[1] | appmag_v = +6.61[3] }}{{Starbox character | class = K0 V[4] | b-v = {{Val|0.877|0.006}}[3] | u-b = | variable = }}{{Starbox astrometry | radial_v = {{Val|−13.87|0.08}}[3] | prop_mo_ra = {{Val|132.019|0.039}}[1] | prop_mo_dec = {{Val|−296.464|0.43}}[1] | parallax = 55.7363 | p_error = 0.0226 | parallax_footnote = [1] | absmag_v = +5.39[3] }}{{Starbox detail | mass = 0.9[11] | radius = {{val|0.8668|0.0324}} | luminosity = {{val|0.6256|0.0077}} | gravity = 4.42[14] | temperature = {{val|5518|102}} | metal_fe = {{val|0.43|0.08}}[11] | age_gyr = {{Val|3.6|2.0}}[17] }}{{Starbox catalog | names = {{odlist | F=14 Her | BD=+44° 2549 | GJ=614 | HD=145675 | HIP=79248 | SAO=45933 | LTT=14816}}[1] }}{{Starbox reference | Simbad = HD+145675 }}{{Starbox end}} 14 Herculis or 14 Her is the Flamsteed designation of a K-type main-sequence star approximately 58.5 light-years away in the constellation Hercules. Because of its apparent magnitude, the star cannot be seen with the naked eye. As of 2006, it is thought that 14 Herculis has two extrasolar planets in orbit around the star. Stellar components14 Herculis is an orange dwarf star of the spectral type K0V. It is thought that the star has 90 percent of the mass, 71 percent of the radius, and only 36 percent of the luminosity of the Sun. The star appears to be 2.7 times as enriched with elements heavier than hydrogen (based on its abundance of iron), in comparison to the Sun. Planetary systemIn 1998 a planet was discovered orbiting 14 Herculis.[2] The planet's eccentric orbital period is 4.8 years.[11] In 2005, a possible second planet was proposed, designated 14 Herculis c.[3] The parameters of this planet are uncertain, but a recent analysis suggests it may lie in the 4:1 resonance with the inner planet, with an orbital period of almost 19 years at an orbital distance of 6.9 AU.[11] {{OrbitboxPlanet begin| table_ref = [11]}}{{OrbitboxPlanet | exoplanet = b | mass = ≥4.64 ± 0.19 | period = 1773.4 ± 2.5 | semimajor = 2.77 ± 0.05 | eccentricity = 0.369 ± 0.005 }}{{OrbitboxPlanet | exoplanet = c | mass = ≥2.1 | period = 6906 ± 70 | semimajor = 6.9 | eccentricity = 0 (fixed) }}{{Orbitbox end}} See also
References1. ^{{cite simbad | title=14 Her | access-date=2018-02-18 }} [4][5][6][7][8][9]2. ^{{cite conference|author=Mayor, M.|title=Searching for giant planets at the Haute-Provence Observatory|conference=IAU Colloqu. 170|booktitle=Precise Stellar Radial Velocities|editor= Hearnshaw, J. B.|editor2= Scarfe, C. D.|date=1998|publisher=ASP|location=San Francisco|display-authors=etal}} 3. ^{{cite journal |author=Goździewski, K. |author2=Konacki, M. |author3=Maciejewski, A. J.|title=Orbital Configurations and Dynamical Stability of Multiplanet Systems around Sun-like Stars HD 202206, 14 Herculis, HD 37124, and HD 108874 |journal=The Astrophysical Journal |volume=645 |issue=1 |pages=688–703 |date=2006 |bibcode=2006ApJ...645..688G |doi=10.1086/504030|arxiv = astro-ph/0511463 |url=http://authors.library.caltech.edu/5547/1/GOZapj06.pdf }} 4. ^1 {{citation | display-authors=1 | last1=Santos | first1=N. C. | last2=Sousa | first2=S. G. | last3=Mortier | first3=A. | last4=Neves | first4=V. | last5=Adibekyan | first5=V. | last6=Tsantaki | first6=M. | last7=Delgado Mena | first7=E. | last8=Bonfils | first8=X. | last9=Israelian | first9=G. | last10=Mayor | first10=M. | last11=Udry | first11=S. | title=SWEET-Cat: A catalogue of parameters for Stars With ExoplanETs. I. New atmospheric parameters and masses for 48 stars with planets | journal=Astronomy & Astrophysics | volume=556 | id=A150 | pages=11 | date=August 2013 | doi=10.1051/0004-6361/201321286 | bibcode=2013A&A...556A.150S | postscript=. | arxiv=1307.0354 }} 5. ^1 {{cite journal | last1=Bonfanti | first1=A. | last2=Ortolani | first2=S. | last3=Piotto | first3=G. | last4=Nascimbeni | first4=V. | title=Revising the ages of planet-hosting stars | journal=Astronomy & Astrophysics | display-authors=1 | volume=575 | issue=A18 | pages=17 | date=2015 | doi=10.1051/0004-6361/201424951 | bibcode=2015A&A...575A..18B | arxiv=1411.4302 }} 6. ^1 2 3 4 {{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | postscript=. }} 7. ^1 {{citation | title=The Perkins catalog of revised MK types for the cooler stars | author1=Keenan | first1=Philip C. | last2=McNeil | first2=Raymond C. | journal=Astrophysical Journal Supplement Series | volume=71 | pages=245 | year=1989 | postscript=. | bibcode=1989ApJS...71..245K | doi=10.1086/191373 }} 8. ^1 2 3 4 5 {{Cite Gaia DR2|1385293808145621504}} 9. ^1 2 3 4 5 {{cite journal | display-authors=1 |first=Robert A. | last=Wittenmyer | last2=Endl | first2=Michael | last3=Cochran | first3=William D. |date=January 2007 | title=Long-Period Objects in the Extrasolar Planetary Systems 47 Ursae Majoris and 14 Herculis | journal=The Astrophysical Journal | volume=654 | issue=1 | pages=625–632 | bibcode=2007ApJ...654..625W | doi=10.1086/509110 |arxiv = astro-ph/0609117 }} }} External links
8 : Flamsteed objects|Hercules (constellation)|Henry Draper Catalogue objects|Hipparcos objects|Gliese and GJ objects|Durchmusterung objects|K-type main-sequence stars|Planetary systems with two confirmed planets |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。