| 词条 | 56 Ursae Majoris |
| 释义 |
|epoch=J2000 |constell=Ursa Major |ra={{RA|11|22|49.58373}}[1] |dec={{DEC|+43|28|57.7267}}[1] |appmag_v=5.03[2] }}{{Starbox character |class=G7IIIBa0.3[3] |b-v=+1.02[4] |u-b=+0.82[4] }}{{Starbox astrometry |radial_v=1.01 ± 0.05[5] |prop_mo_ra=-37.42[1] |prop_mo_dec=-14.26[1] |parallax=6.12 |p_error=0.27 |parallax_footnote=[1] }}{{Starbox orbit |reference=[5] |period_unitless=16460 ± 631 d |periastron=2451521 ± 35 |eccentricity=0.555 ± 0.016 |periarg=286.8 ± 2.0 |k1=3.84 ± 0.04 }}{{Starbox catalog |names={{odlist|BD=+44° 2083|FK5=2908|HD=98839|HIP=55560|HR=4392|SAO=43719}} }}{{Starbox reference |Simbad=56+UMa }}{{Starbox end}}56 Ursae Majoris (56 UMa) is a star in the constellation Ursa Major. Its apparent magnitude is 5.03.[2] It is a single-lined spectroscopic binary with an orbital period of about 45 years.[5] 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|author=van Leeuwen, F.|display-authors=etal|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}} {{Stars of Ursa Major}}{{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|author1=Ducati, J. R.|year=2002}} 3. ^{{cite journal|bibcode=1991AJ....101.2229L|title=Taxonomy of barium stars|author=Lu, Phillip K.|journal=Astronomical Journal|volume=101|pages=2229–2254|date=1991|doi=10.1086/115845}} 4. ^1 {{cite journal|bibcode=1983ApJS...52....7F|doi=10.1086/190856|title=New UBVRI photometry for 900 supergiants|author=Fernie, J. D.|journal=Astrophysical Journal Supplement Series|volume=52|issue=7–22|date=1983}} 5. ^1 2 {{cite journal|title=SB9: The ninth catalogue of spectroscopic binary orbits|display-authors=1|author1=Pourbaix, D.|author2=Tokovinin, A. A.|author3=Batten, A. H.|author4=Fekel, F. C.|author5=Hartkopf, W. I.|author6=Levato, H.|author7=Morrell, N. I.|author8=Torres, G.|author9=Udry, S.|journal=Astronomy and Astrophysics|volume=424|issue=2|pages=727|year=2004|doi=10.1051/0004-6361:20041213|arxiv=astro-ph/0406573|bibcode=2004A&A...424..727P}} 9 : Ursa Major (constellation)|G-type giants|Barium stars|Spectroscopic binaries|Flamsteed objects|Durchmusterung objects|Henry Draper Catalogue objects|Hipparcos objects|HR objects |
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