| 词条 | Nu Pictoris |
| 释义 |
|name=Nu Pictoris}}{{Starbox image | image = | caption=Location of ν Pictoris (circled) }}{{Starbox observe |constell=Pictor |epoch=J2000 | ra = {{RA|06|22|55.82671}}[1] | dec = {{DEC|-56|22|11.8909}}[1] |appmag_v=5.609[2] }}{{Starbox character |class=A1m[2] |b-v=0.26[3] |u-b=0.12[3] }}{{Starbox astrometry |radial_v=6.7[2] |prop_mo_ra=-39.96[1] |prop_mo_dec=-20.13[1] |parallax=20.72 |p_error=0.56 |parallax_footnote=[1] |absmag_v=+2.18[4] }}{{Starbox orbit |reference=[5] |primary=Nu Pictoris A |name=Nu Pictoris B |period_unitless=452 days |axis_unitless=5.9 mas |inclination=116 |node=53 |periastron=2448660 |eccentricity=0.2 |periarg=109 }}{{Starbox catalog |names=ν Pic, CPD-56° 1072, HD 45229, HIP 30342, SAO 234473, HR 2320, GC 8274, TYC 8542-1469-1}}{{Starbox reference |Simbad=HD+45229 }}{{Starbox end}}Nu Pictoris (ν Pictoris) is a star in the Pictor constellation. Parallax measurements put it about 157 light years from Earth. It is an A-class star with metallic lines (Am type).[2] Data from the Hipparcos observatory indicate that it is an astrometric binary with period around 440 days and the companion about 1/4 the mass of the primary.[6] References1. ^1 2 3 4 {{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | date=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} Vizier catalog entry {{Stars of Pictor}}{{Main-star-stub}}2. ^1 2 3 {{cite simbad|title=nu. Pic|accessdate=28 December 2016}} 3. ^1 {{cite journal|title=Photoelectric UBVRI observations of AM stars|author=Feinstein, A.|journal=Astronomical Journal|volume=79|page=1290|date=1974|bibcode=1974AJ.....79.1290F|doi=10.1086/111675}} 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=. }} 5. ^{{cite journal|title=Astrometric Orbits for Hipparcos Stochastic Binaries|author1=Goldin, A.|journal=The Astrophysical Journal Supplement Series|volume=173|issue=1|pages=137–142|date=2007|bibcode=2007ApJS..173..137G|doi=10.1086/520513|arxiv=0706.0361}} 6. ^{{cite journal|author1=Goldin, A. |author2=Makarov, V. V. |title=Unconstrained Astrometric Orbits for Hipparcos Stars with Stochastic Solutions|journal=The Astrophysical Journal Supplement Series|volume=166|issue=1|pages=341–350|date=September 2006|bibcode=2006ApJS..166..341G|doi=10.1086/505939|arxiv = astro-ph/0606293 }} 7 : Pictor (constellation)|A-type main-sequence stars|Hipparcos objects|Henry Draper Catalogue objects|Durchmusterung objects|HR objects|Astrometric binaries |
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