| 词条 |
Mu2 Gruis |
| 释义 |
- References
{{DISPLAYTITLE:Mu2 Gruis}}{{other stars by Bayer designation|Mu Gruis{{!}}μ Gruis}}{{Starbox begin
| name = Mu2 Gruis
}}{{Starbox observe
| epoch = J2000.0
| equinox = J2000.0 (ICRS)
| constell = Grus
| ra = {{RA|22|16|26.55881}}
| dec = {{DEC|−41|37|37.9851}}
| appmag_v = 5.10[3]
}}{{Starbox character
| class = G8 III[4]
| b-v = +0.92[3]
| u-b =
| r-i =
| variable =
}}{{Starbox astrometry
| radial_v = +12.50[6]
| prop_mo_ra = −12.57
| prop_mo_dec = −6.72
| parallax = 12.29
| p_error = 0.64
| parallax_footnote =
| absmag_v = +0.56[10]
}}{{Starbox detail
| source =
| mass =
| radius =
| luminosity = 68[10]
| temperature =
| gravity =
| metal_fe =
| rotational_velocity =
| age_gyr =
}}{{Starbox catalog
| names = {{odlist | B=μ2 Gru | CD=−42° 15846 | FK5= | HD=211202 | HIP=109973 | HR=8488 | SAO=231063 }}[12]
}}{{Starbox reference
| Simbad = mu.02+Gru
}}{{starbox end}}Mu2 Gruis, Latinized from μ2 Gruis, is a yellow-hued star or star system in the southern constellation of Grus. It is a suspected astrometric binary, showing a variation in proper motion due to gravitational acceleration.[13] Mu2 Gruis is visible to the naked eye with an apparent visual magnitude of 5.10.[3] The distance to this system, as determined using an annual parallax shift of 12.29 mas as seen from the Earth,[ is around 270 light years. The primary component is an evolved giant star with a stellar classification of G8 III.[4] It is a periodic variable star, showing a change in brightness with an amplitude of 0.004 magnitude at the rate of 7.50983 times per day.[17]]References1. ^1 2 {{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=. }}
2. ^1 {{citation | last1=Gontcharov | first1=G. A. | title=Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system | journal=Astronomy Letters | postscript=. | volume=32| issue=11| pages=759–771| date=November 2006 | doi = 10.1134/S1063773706110065| bibcode=2006AstL...32..759G |arxiv = 1606.08053 }}
3. ^1 2 {{citation | last1=Houk | first1=N. | title=Michigan catalogue of two-dimensional spectral types for the HD stars | volume=2 | date=1978 | postscript=. | publisher=Dept. of Astronomy, University of Michigan | bibcode=1978mcts.book.....H }}
4. ^1 {{citation | title=New periodic variables from the Hipparcos epoch photometry | last1=Koen | first1=Chris | last2=Eyer | first2=Laurent | journal=Monthly Notices of the Royal Astronomical Society | volume=331 | pages=45 | year=2002 | postscript=. | bibcode=2002MNRAS.331...45K | arxiv=astro-ph/0112194 | doi=10.1046/j.1365-8711.2002.05150.x }}
5. ^1 {{citation | last1=Makarov | first1=V. V. | last2=Kaplan | first2=G. H. | title=Statistical Constraints for Astrometric Binaries with Nonlinear Motion | journal=The Astronomical Journal | postscript=. | volume=129 | issue=5 | pages=2420–2427 | date=May 2005 | doi=10.1086/429590 | bibcode=2005AJ....129.2420M | url=http://www.dtic.mil/get-tr-doc/pdf?AD=ADA433654}}
6. ^1 2 3 {{citation | display-authors=1 | last1=Johnson | first1=H. L. | last2=Iriarte | first2=B. | last3=Mitchell | first3=R. I. | last4=Wisniewskj | first4=W. Z. | title=UBVRIJKL photometry of the bright stars | journal=Communications of the Lunar and Planetary Laboratory | volume=4 | issue=99 | year=1966 | bibcode=1966CoLPL...4...99J | postscript=. }}
7. ^1 {{citation | title=mu.02 Gru -- Star | work=SIMBAD Astronomical Database | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=mu02+Gru | accessdate=2017-06-26 | postscript=. }}
[1][2][3][4][5][6][7]
}}{{Stars of Grus|state=collapsed}}{{giant-star-stub}} 8 : G-type giants|Astrometric binaries|Grus (constellation)|Bayer objects|Hipparcos objects|HR objects|Henry Draper Catalogue objects|Durchmusterung objects |
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