词条 | HD 194244 |
释义 |
| name=HD 194244 }}{{Starbox observe | epoch=J2000 | ra={{RA|20|24|37.49846}} | dec={{DEC|+01|04|06.2592}} | appmag_v=6.14[3] | constell=Aquila }}{{Starbox character | class=B9V[4] | r-i = | v-r = | b-v = −0.04[3] | u-b = −0.14[3] | variable= }}{{Starbox astrometry | radial_v={{val|−9.6|0.9}}[7] | prop_mo_ra=+8.37 | prop_mo_dec=+5.26 | parallax=4.04 | p_error=0.39 | parallax_footnote= | absmag_v= }}{{Starbox detail | mass= | radius= | luminosity=173[11] | temperature=8,822[11] | metal_fe= | rotational_velocity=222[13] | age= }}{{Starbox catalog | names=BD+00° 4495, HD 194244, HIP 100664, HR 7803, SAO 125769. }}{{Starbox reference | Simbad=HD+194244 }}{{Starbox end}} HD 194244 is a variable Be star[14] in the equatorial constellation of Aquila. With an apparent magnitude of 6.14, according to the Bortle scale it is faintly visible to the naked eye from rural skies on a dark night. References1. ^1 {{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 = 759–771| date = November 2006| last1 = Gontcharov | first1 = G. A.|arxiv = 1606.08053 }} Vizier catalog entry[1][2][3][4][5][6]2. ^1 {{citation | display-authors=1 | last1=Cowley | first1=A. | last2=Cowley | first2=C. | last3=Jaschek | first3=M. | last4=Jaschek | first4=C. | title=A study of the bright A stars. I. A catalogue of spectral classifications | journal=Astronomical Journal | volume=74 | pages=375–406 | doi=10.1086/110819 | bibcode=1969AJ.....74..375C | date=April 1969}} 3. ^1 2 3 {{citation | last1=Cousins | first1=A. W. J. | title=Photometric Data for Stars in the Equatorial Zone (Seventh List) | journal=Monthly Notes of the Astronomical Society of Southern Africa | volume=23 | page=175 | year=1964 | bibcode=1964MNSSA..23..175C}} 4. ^1 {{citation | last1=Royer | first1=F. | last2=Zorec | first2=J. | last3=Gómez | first3=A. E. | title=Rotational velocities of A-type stars. III. Velocity distributions | journal=Astronomy and Astrophysics | volume=463 | issue=2 | pages=671–682 | date=February 2007 | doi=10.1051/0004-6361:20065224 | bibcode=2007A&A...463..671R | arxiv=astro-ph/0610785}} 5. ^1 2 {{citation | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. | date=2012 | title=Fundamental Parameters and Infrared Excesses of Hipparcos Stars | journal=Monthly Notices of the Royal Astronomical Society | volume=427 | issue=1 | pages=343–57 | bibcode=2012MNRAS.427..343M | arxiv=1208.2037 | doi=10.1111/j.1365-2966.2012.21873.x}} 6. ^1 {{citation | last1=Neiner | first1=C. | last2=Hubert | first2=A.-M. | last3=Catala | first3=C. | title=The Identification of New Be Stars in GAUDI | journal=The Astrophysical Journal Supplement Series | volume=156 | issue=2 | pages=237–243 | date=February 2005 | doi=10.1086/426670 | bibcode=2005ApJS..156..237N}} }} External links
7 : Aquila (constellation)|Henry Draper Catalogue objects|B-type main-sequence stars|Be stars|HR objects|Hipparcos objects|Durchmusterung objects |
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