| 词条 | 42 Orionis |
| 释义 |
| name = 42 Orionis }}{{Starbox image |image={{Location mark |image=Orion constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Map_pointer.svg|mark_width=17|mark_link=42 Orionis |x=583|y=650 }} |caption=Location of 42 Orionis (marked red) }}{{Starbox observe | epoch = J2000 | constell = Orion | ra = {{RA|05|35|23.16427}}[1] | dec = {{DEC|-4|50|18.0881}}[1] | appmag_v = 4.59[2] }}{{Starbox character | class = B1V[3] | b-v = -0.19[2] | u-b = -0.94[2] }}{{Starbox astrometry | radial_v = +28.40[4] | prop_mo_ra = +4.52[1] | prop_mo_dec = -7.11[1] | parallax = 3.69 | p_error = 1.20 | parallax_footnote = [1] }}{{Starbox detail | mass = 12.0[5] | temperature = 25,400[6] | rotational_velocity = 20[7] }}{{Starbox catalog | names = c Orionis, BD-04°1185, CCDM J05354-0450AB, GC 6934, HIP 26237, HR 1892, HD 37018, NSV 2318, SAO 132320, WDS J05354-0450AB }}{{Starbox reference | Simbad = 42+Orionis }}{{Starbox end}}42 Orionis is a class B1V[3] (blue main-sequence) star in the constellation Orion. Its apparent magnitude is 4.59[2] and it is approximately 900 light years away based on parallax.[1] The primary star, Aa, has one spectroscopic companion Ab of magnitude 6.3 and separation 0.16", and a more distant companion B of 7.5 magnitude at 1.6" separation.[8][9] c Orionis is surrounded by NGC 1977 one of a smaller fainter group of named nebulae just north of the Orion Nebula. c Ori is the star which excites and illuminates NGC 1977. References1. ^1 2 3 4 5 {{cite journal | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653 | year=2007 | last1=Van Leeuwen | first1=F. }} Vizier catalog entry {{Stars of Orion}}2. ^1 2 3 {{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 |first1=J. R. |year=2002 }} 3. ^1 {{cite journal | bibcode=1995yCat.5050....0H | title=VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) | journal=VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H | volume=5050 | author1=Hoffleit | first1=D. | last2=Warren | first2=W. H. | year=1995 }} 4. ^{{Cite journal | doi=10.1134/S1063773706110065 | bibcode=2006AstL...32..759G| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal=Astronomy Letters| volume=32| issue=11| pages=759| year=2006| last1=Gontcharov| first1=G. A.|arxiv = 1606.08053 }} 5. ^{{cite journal | bibcode=2011MNRAS.410..190T | doi=10.1111/j.1365-2966.2010.17434.x | arxiv=1007.4883 | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun | journal=Monthly Notices of the Royal Astronomical Society | volume=410 | pages=190 | year=2011 | last1=Tetzlaff | first1=N. | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M. }} Vizier catalog entry 6. ^{{cite journal | bibcode=2010AN....331..349H | doi=10.1002/asna.200911355 | arxiv=1003.2335 | title=Masses and luminosities of O- and B-type stars and red supergiants | journal=Astronomische Nachrichten | volume=331 | issue=4 | pages=349 | year=2010 | last1=Hohle | first1=M.M. | last2=Neuhäuser | first2=R. | last3=Schutz | first3=B.F. }} Vizier catalog entry 7. ^{{cite journal | bibcode=2002ApJ...573..359A | doi=10.1086/340590 | title=Rotational Velocities of B Stars | journal=The Astrophysical Journal | volume=573 | pages=359 | year=2002 | last1=Abt | first1=Helmut A. | last2=Levato | first2=Hugo | last3=Grosso | first3=Monica }} 8. ^{{cite journal | bibcode=2001AJ....122.3466M | doi=10.1086/323920 | title=The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog | journal=The Astronomical Journal | volume=122 | issue=6 | pages=3466 | year=2001 | last1=Mason | first1=Brian D. | last2=Wycoff | first2=Gary L. | last3=Hartkopf | first3=William I. | last4=Douglass | first4=Geoffrey G. | last5=Worley | first5=Charles E. }} Vizier catalog entry 9. ^{{cite journal | bibcode=2015AJ....150...50T | doi=10.1088/0004-6256/150/2/50 | title=Speckle Interferometry at Soar in 2014 | journal=The Astronomical Journal | volume=150 | issue=2 | pages=50 | year=2015 | last1=Tokovinin | first1=Andrei | last2=Mason | first2=Brian D. | last3=Hartkopf | first3=William I. | last4=Mendez | first4=Rene A. | last5=Horch | first5=Elliott P. |arxiv = 1506.05718 }} 9 : Orion (constellation)|B-type main-sequence stars|Bayer objects|Durchmusterung objects|Flamsteed objects|Hipparcos objects|HR objects|Henry Draper Catalogue objects|Suspected variables |
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