| 词条 | Alpha Cancri |
| 释义 |
| name=Alpha Cancri }}{{Starbox image | image = | caption = α Cancri in the constellation Cancer }}{{Starbox observe | epoch = J2000.0 | equinox = J2000.0 (ICRS) | constell = Cancer |ra={{RA|08|58|29.2217}}[1] | dec = {{DEC|+11|51|27.723}}[1] | appmag_v=4.20 to 4.27[2] }}{{Starbox character | class = A5m[1] | u-b = +0.15[3] | b-v = +0.14[3] | r-i = +0.04[3] }}{{Starbox astrometry | radial_v = −13.8 ± 2[1] | prop_mo_ra = 36.109[9] | prop_mo_dec = −24.669[9] | parallax = 19.8724 | p_error = 0.4129 | parallax_footnote = [4] | absmag_v=0.46[5] }}{{Starbox detail | component1 = Aa + Ab | mass=2.10[6] | radius = | luminosity=50.55[7] | temperature=7,943[8] | metal= 3.73[8] | rotational_velocity=75[9] | age= | component2 = B | mass2 = 0.38[6] }}{{Starbox catalog | names=Acubens, Sertan, Sartan,[3] α Cnc, Alpha Cancri, Alpha Cnc, 65 Cancri, 65 Cnc, ADS 7115 A, BD+12 1948, CCDM J08585+1151A, FK5 337, GC 12406, HD 76756, HIP 44066, HR 3572, IDS 08530+1215 A, PPM 125972, SAO 98267[1]}}{{Starbox reference | Simbad=alpha+cancri}}{{Starbox end}} Alpha Cancri (α Cancri, abbreviated Alpha Cnc, α Cnc), also named Acubens, is a star system in the constellation of Cancer. Nomenclatureα Cancri (Latinised to Alpha Cancri) is the star's Bayer designation. The traditional name Acubens (Açubens) is derived from the Arabic {{lang|ar| الزبانى|rtl=yes}} {{lang|ar-Latn|al zubanāh}}, "the claws" [10] The International Astronomical Union Working Group on Star Names (WGSN) has chosen Acubens as the proper name this star.[11] PropertiesAlpha Cancri is a fourth-magnitude star with an apparent magnitude of 4.20, making it barely visible to the naked eye under good lighting conditions. Nevertheless, it is 23 times more luminous than the Sun. Its stellar classification is A5m. The distance of Alpha Cancri calculated from the Gaia Data Release 2 parallax is roughly 50 parsecs from Earth, or approximately 164 light years away. Since it is near the ecliptic, it can be occulted by the Moon and very rarely by planets. Star systemThe primary component, α Cancri A, is a white A-type main sequence dwarf with an apparent magnitude of +4.26. Its companion, α Cancri B, is an eleventh magnitude star. In the year 1836, its position angle was observed at 325 degrees with a separation from the main star α Cancri A of 11.3{{nbsp}}arcseconds.[12][13] From studying its light curve during occultation, it is thought that α Cancri A may itself be a close binary, consisting of two stars with similar brightness and a separation of 0.1{{nbsp}}arcseconds.[3] In modern cultureUSS Acubens (AKS-5) was a United States navy ship. References1. ^1 2 3 4 {{cite simbad| title =alf Cnc| accessdate = 2009-09-20}} 2. ^NSV 4327, database entry, New Catalogue of Suspected Variable Stars, the improved version, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line October 20, 2009. 3. ^1 2 3 4 HR 3572, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line October 20, 2009. 4. ^1 2 {{cite DR2|604789257076233728}} 5. ^{{citation | title=XHIP: An extended hipparcos compilation | last1=Anderson | first1=E. | last2=Francis | first2=Ch. | journal=Astronomy Letters | arxiv=1108.4971 | volume=38 | issue=5 | pages=331 | year=2012 | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | postscript=. }} 6. ^1 {{cite journal|bibcode=1997A&AS..124...75T|title=MSC - a catalogue of physical multiple stars|journal=Astronomy and Astrophysics Supplement Series|volume=124|pages=75–84|last1=Tokovinin|first1=A. A.|year=1997|doi=10.1051/aas:1997181}} 7. ^{{cite journal|bibcode=2012MNRAS.427..343M|title=Fundamental parameters and infrared excesses of Hipparcos stars|journal=Monthly Notices of the Royal Astronomical Society|volume=427|issue=1|pages=343|last1=McDonald|first1=I.|last2=Zijlstra|first2=A. A.|last3=Boyer|first3=M. L.|year=2012}} 8. ^1 {{cite journal|bibcode=2018AJ....155...30B|title=Fundamental Parameters of 87 Stars from the Navy Precision Optical Interferometer|journal=The Astronomical Journal|volume=155|issue=1|pages=30|last1=Baines|first1=Ellyn K.|last2=Armstrong|first2=J. Thomas|last3=Schmitt|first3=Henrique R.|last4=Zavala|first4=R. T.|last5=Benson|first5=James A.|last6=Hutter|first6=Donald J.|last7=Tycner|first7=Christopher|last8=Van Belle|first8=Gerard T.|year=2018}} 9. ^{{cite journal | author=Royer, F. | author2=Grenier, S. | author3=Baylac, M.-O. | author4=Gómez, A. E. | author5=Zorec, J. | title=Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i in the northern hemisphere | journal=Astronomy and Astrophysics | year=2002 | volume=393 | issue=3 | pages=897–911 | type = PDF | bibcode=2002A&A...393..897R | doi=10.1051/0004-6361:20020943|arxiv = astro-ph/0205255 }} 10. ^Richard Hinckley Allen: Star Names — Their Lore and Meaning: Cancer 11. ^{{cite web|url=https://www.iau.org/public/themes/naming_stars/|title=Naming Stars|publisher=International Astronomical Union|accessdate=2018-11-04}} 12. ^{{cite web |title=CCDM (Catalog of Components of Double & Multiple stars (Dommanget+ 2002) |work=VizieR |publisher=Centre de Données astronomiques de Strasbourg |url=http://vizier.u-strasbg.fr/viz-bin/VizieR-S?CCDM%20J08585%2b1151A |accessdate=2010-05-13}} 13. ^{{cite web |url=http://www.alcyone.de/SIT/mainstars/SIT000505.htm#Cat4 | title=Acubens | publisher=Alcyone Bright Star Catalogue | accessdate=2010-05-13}} External links
11 : Bayer objects|Cancer (constellation)|Binary stars|A-type main-sequence stars|Stars with proper names|Henry Draper Catalogue objects|Hipparcos objects|Flamsteed objects|Durchmusterung objects|HR objects|Am stars |
| 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。