| 词条 | Nu Hydri |
| 释义 |
| name = ν Hydri }}{{Starbox image |image={{Location mark |image=Hydrus constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=Nu Hydri |x=450|y=752 }} |caption=Location of ν Hydri (circled) }}{{Starbox observe | epoch = J2000 | constell = Hydrus | ra = {{RA|02|50|28.46194}}[1] | dec = {{DEC|-75|04|01.0107}}[1] | appmag_v = 4.76[2] }}{{Starbox character | class = K3III[2] | b-v = +1.33[3] | u-b = +1.56[3] }}{{Starbox astrometry | radial_v = +4.70[4] | prop_mo_ra = -33.01[1] | prop_mo_dec = -27.30[1] | parallax = 9.61 | p_error = 0.16 | parallax_footnote = [1] | absmag_v = -0.33[2] }}{{Starbox detail | mass = 3.5[5] | radius = 17.2[5] | rotation = 50 d[5] | temperature = 4,428[6] | luminosity = 241[2] | rotational_velocity = 1.3[7] | gravity = 3.30[8] | metal_fe = −1.52[8] }}{{Starbox catalog | names = CPD−75° 204, FK5 2199, GC 3463, HIP 13244, HR 872, HD 18293, SAO 255929 }}{{Starbox reference | Simbad = HR+872 }}{{Starbox end}}Nu Hydri (ν Hyi) is a class K3III[2] (orange giant) star in the constellation Hydrus. Its apparent magnitude is 4.76[2] and it is approximately 339 light years away based on parallax.[1] 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 Hydrus}}{{Giant-star-stub}}2. ^1 2 3 4 5 {{cite journal | bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | title=XHIP: An extended hipparcos compilation | journal=Astronomy Letters | volume=38 | issue=5 | pages=331 | year=2012 | last1=Anderson | first1=E. | last2=Francis | first2=Ch. }} Vizier catalog entry 3. ^1 {{cite journal | bibcode=2014JAVSO..42..443M | title=Sloan Magnitudes for the Brightest Stars | journal=The Journal of the American Association of Variable Star Observers | volume=42 | pages=443 | author1=Mallama | first1=A. | year=2014 }}Vizier catalog entry 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. ^1 2 {{citation | title=The relation between X-ray activity and rotation in intermediate-mass G giants | last1=Gondoin | first1=P. | postscript=. | journal=Astronomy and Astrophysics | volume=444 | issue=2 | pages=531–538 | date=December 2005 | doi=10.1051/0004-6361:20053567 | bibcode=2005A&A...444..531G }} 6. ^{{cite journal | bibcode=2012MNRAS.427..343M | doi=10.1111/j.1365-2966.2012.21873.x |title=Fundamental parameters and infrared excesses of Hipparcos stars| journal=Monthly Notices of the Royal Astronomical Society | volume=427 | pages=343 | year=2012 | last1=McDonald | first1=I. | last2=Zijlstra | first2=A. A. | last3=Boyer | first3=M. L. |arxiv = 1208.2037 }} Vizier catalog entry 7. ^{{cite journal | bibcode=2014A&A...561A.126D | doi=10.1051/0004-6361/201220762 | arxiv=1312.3474 | title=A catalog of rotational and radial velocities for evolved stars | journal=Astronomy & Astrophysics | volume=561 | pages=A126 | year=2014 | last1=De Medeiros | first1=J. R. | last2=Alves | first2=S. | last3=Udry | first3=S. | last4=Andersen | first4=J. | last5=Nordström | first5=B. | last6=Mayor | first6=M. }} Vizier catalog entry 8. ^1 {{cite journal | bibcode=2016A&A...591A.118S | doi=10.1051/0004-6361/201628497 |arxiv=1605.07384 | title=The PASTEL catalogue: 2016 version | journal=Astronomy & Astrophysics | volume=591 | pages=A118 | year=2016 | last1=Soubiran | first1=Caroline | last2=Le Campion | first2=Jean-François | last3=Brouillet | first3=Nathalie | last4=Chemin | first4=Laurent }} 7 : Hydrus (constellation)|K-type giants|Bayer objects|Durchmusterung objects|Hipparcos objects|HR objects|Henry Draper Catalogue objects |
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