| 词条 | 109 Herculis |
| 释义 |
|constell= Hercules |name= 109 Herculis |class= K2 III[1] |ra= {{RA|18|23|41.89}}[1] |dec= {{DEC|+21|46|11.1}}[1] |appmag_v= 3.84[2] |absmag_v=+0.87[3] |names={{odlist|BD=+21° 3411|FK5=690|HD=169414|HIP=90139|HR=6895|SAO=86003}} }} 109 Herculis is a star in the constellation Hercules. Its apparent magnitude is 3.84.[2] Located around {{convert|36.47|pc|ly}} distant,[1] it is an orange giant of spectral type K2III,[4] a star that has used up its core hydrogen and has expanded. This star, together with 93 Her, 95 Her, and 102 Her, were consist Cerberus, the obsolete constellation[5] References1. ^1 2 {{cite journal | first=F. | last=van Leeuwen | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=November 2007 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | arxiv=0708.1752}} {{Stars of Hercules}}{{giant-star-stub}}2. ^1 {{cite journal|bibcode=2002yCat.2237....0D|title=VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system|journal=CDS/ADC Collection of Electronic Catalogues|volume=2237|pages=0|author1=Ducati|first1=J. R.|year=2002}} 3. ^{{citation | title=Mg II chromospheric radiative loss rates in cool active and quiet stars | last1=Cardini | first1=D. | postscript=. | journal=Astronomy and Astrophysics | volume=430 | pages=303–311 | date=January 2005 | doi=10.1051/0004-6361:20041440 | bibcode=2005A&A...430..303C |arxiv = astro-ph/0409683 }} 4. ^1 {{cite web |url =http://simbad.u-strasbg.fr/simbad/sim-id?Ident=109+Her&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id |title = 109 Herculis |work = SIMBAD Astronomical Database|publisher=Centre de Données astronomiques de Strasbourg |accessdate = 25 July 2015}} 5. ^Ian Ridpath's Star Tales - Cerberus 7 : Hercules (constellation)|K-type giants|Flamsteed objects|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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