இராசு 47
{{Starbox begin 
 |name=Ross 47
 }}
 {{Starbox observe
 |epoch=[[J1950.0]]
 |constell=[[Orion (constellation)|Orion]]
 |ra={{RA|05|42|09.26769}}&lt;ref name=dr3/&gt;
 |dec={{DEC|+12|29|21.6048}}&lt;ref name=dr3/&gt;
 |appmag_v=+11.48 - 11.55&lt;ref name=gcvs/&gt;
 }}
 {{Starbox character
 | type = [[red dwarf]]
 | class    = M4V&lt;ref name=kirkpatrick1991&gt;{{cite journal |doi=10.1086/191611 |author1=Kirkpatrick, J. Davy |author2=Henry, Todd J. |author3=McCarthy, Donald W. Jr. |title=A standard stellar spectral sequence in the red/near-infrared - Classes K5 to M9 |journal=Astrophysical Journal Supplement |date=1991 |volume=77 |pages=417 |bibcode=1991ApJS...77..417K|doi-access=free }}&lt;/ref&gt;
 | b-v      = +13.130
 | u-b      = +14.264
 | variable = [[BY Draconis variable|BY Dra]]&lt;ref name=gcvs&gt;{{cite journal
  | last1=Samus | first1=N. N. | last2=Kazarovets | first2=E. V.
  | last3=Durlevich | first3=O. V. | last4=Kireeva | first4=N. N.
  | last5=Pastukhova | first5=E. N. | display-authors=1
  | title=General Catalogue of Variable Stars
  | version=GCVS 5.1 | journal=Astronomy Reports
  | year=2017 | volume=61 | issue=1 | pages=80–88
  | doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 }}&lt;/ref&gt;
 }}
 {{Starbox astrometry 
 |radial_v= {{val|106.06|0.18}}&lt;ref name=dr3/&gt;
 |prop_mo_ra=+1,997.342&lt;ref name=dr3/&gt;
 |prop_mo_dec=−1569.63&lt;ref name=dr3/&gt;
 |parallax=172.6762
 |p_error=0.0286
 |parallax_footnote=&lt;ref name=dr3&gt;{{cite Gaia DR3|3340477717172813568}}&lt;/ref&gt;
 |absmag_v=+12.73&lt;ref name=xhip&gt;{{cite journal | last1 = Anderson | first1 = E. | last2 = Francis | first2 = Ch. | title = XHIP: An extended hipparcos compilation | journal = Astronomy Letters | date = May 2012 | volume = 38 | issue = 5 | pages = 331–346 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773712050015 | bibcode = 2012AstL...38..331A | arxiv = 1108.4971| s2cid = 119257644 }}&lt;/ref&gt;
 }}
 {{Starbox detail
 | source=
 | metal_fe = {{val|-0.19|0.17}}&lt;ref&gt;{{citation|arxiv=2002.09367|year=2020|title=ODUSSEAS: A machine learning tool to derive effective temperature and metallicity for M dwarf stars|doi=10.1051/0004-6361/201937194|last1=Antoniadis-Karnavas|first1=A.|last2=Sousa|first2=S. G.|last3=Delgado-Mena|first3=E.|last4=Santos|first4=N. C.|last5=Teixeira|first5=G. D. C.|last6=Neves|first6=V.|journal=Astronomy &amp; Astrophysics|volume=636|pages=A9|bibcode=2020A&amp;A...636A...9A|s2cid=211252698}}&lt;/ref&gt;
 | mass     = {{val|0.218|0.005}}&lt;ref name=pineda2021&gt;{{cite journal | title=The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars | last1=Pineda | first1=J. Sebastian | last2=Youngblood | first2=Allison | last3=France | first3=Kevin | journal=The Astrophysical Journal | volume=918 | issue=1 | id=40 | pages=23 | date=September 2021 | doi=10.3847/1538-4357/ac0aea | arxiv=2106.07656 | bibcode=2021ApJ...918...40P | s2cid=235435757}}&lt;/ref&gt;
 | radius   = {{val|0.238|0.009}}&lt;ref name=pineda2021/&gt;
 | rotation = 170&lt;ref name=ad2017&gt;{{cite journal |bibcode=2017A&amp;A...600A..13A |title=Magnetic activity in the HARPS M dwarf sample. The rotation-activity relationship for very low-mass stars through R'{{sub|HK}} |last1=Astudillo-Defru |first1=N. |last2=Delfosse |first2=X. |last3=Bonfils |first3=X. |last4=Forveille |first4=T. |last5=Lovis |first5=C. |last6=Rameau |first6=J. |journal=Astronomy and Astrophysics |year=2017 |volume=600 |page=600 |doi=10.1051/0004-6361/201527078 |arxiv=1610.09007 |s2cid=119237202 }}&lt;/ref&gt;
 | rotational_velocity = 3.1&lt;ref name=hojj2020&gt;{{cite journal |bibcode=2020A&amp;A...639A..35H |title=The correlation between photometric variability and radial velocity jitter. Based on TESS and HARPS observations |last1=Hojjatpanah |first1=S. |last2=Oshagh |first2=M. |last3=Figueira |first3=P. |last4=Santos |first4=N. C. |last5=Amazo-Gómez |first5=E. M. |last6=Sousa |first6=S. G. |last7=Adibekyan |first7=V. |last8=Akinsanmi |first8=B. |last9=Demangeon |first9=O. |last10=Faria |first10=J. |last11=Gomes Da Silva |first11=J. |last12=Meunier |first12=N. |journal=Astronomy and Astrophysics |year=2020 |volume=639 |page=639 |doi=10.1051/0004-6361/202038035 |arxiv=2005.10105 |s2cid=218719951 }}&lt;/ref&gt;
 | luminosity  = {{val|0.006288|0.000094}}&lt;ref name=pineda2021/&gt;
 | temperature = {{val|3334|67|63|fmt=commas}}&lt;ref name=pineda2021/&gt;
 | gravity = 4.44&lt;ref name=dr3/&gt;
 | age_gyr  = 7.1&lt;ref name=maldonado2020&gt;{{cite journal |bibcode=2020A&amp;A...644A..68M |title=HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets |last1=Maldonado |first1=J. |last2=Micela |first2=G. |last3=Baratella |first3=M. |last4=d'Orazi |first4=V. |last5=Affer |first5=L. |last6=Biazzo |first6=K. |last7=Lanza |first7=A. F. |last8=Maggio |first8=A. |last9=González Hernández |first9=J. I. |last10=Perger |first10=M. |last11=Pinamonti |first11=M. |last12=Scandariato |first12=G. |last13=Sozzetti |first13=A. |last14=Locci |first14=D. |last15=Di Maio |first15=C. |last16=Bignamini |first16=A. |last17=Claudi |first17=R. |last18=Molinari |first18=E. |last19=Rebolo |first19=R. |last20=Ribas |first20=I. |last21=Toledo-Padrón |first21=B. |last22=Covino |first22=E. |last23=Desidera |first23=S. |last24=Herrero |first24=E. |last25=Morales |first25=J. C. |last26=Suárez-Mascareño |first26=A. |last27=Pagano |first27=I. |last28=Petralia |first28=A. |last29=Piotto |first29=G. |last30=Poretti |first30=E. |journal=Astronomy and Astrophysics |year=2020 |volume=644 |pages=A68 |doi=10.1051/0004-6361/202039478 |arxiv=2010.14867 }}&lt;/ref&gt;
 }}
 {{Starbox catalog|names={{Odlist
 |Ross=47
 |V=V1352 Ori
 |Ci 20=344
 |GJ=213
 |G=102-22
 |HIP=26857
 |TYC=722-455-1
 |LFT=425
 |LTT=11704
 |LHS=31
 |NLTT=15489
 |2MASS=J05420897+1229252
 }}&lt;ref name=SIMBAD&gt;{{cite simbad|title=Ross 47|access-date=16 February 2021}}&lt;/ref&gt;
 }}
 {{Starbox reference
 |Simbad=TYC+722-455-1
 }}
 {{Starbox image
 |image={{Location map|100x100|AlternativeMap=Orion_constellation_map.svg
 |alt=Ross 47 is located in the constellation Orion
 |caption=Location of Ross 47 in the constellation [[Orion (constellation)|Orion]]|border=infobox|mark=Red_pog.png|width=300
 |label=Ross 47
 |lat=84.6
 |long=54.5
 }}|caption=
 }}
 {{Starbox end}}
 
 '''இராசு 47''' ('''Ross 47''' )iஎன்பது புவியிலிருந்து 19 [[ஒளியாண்டு|ஒளியாண்டுகள் தொலைவில்]] உள்ள [[ஒரியன் (உடுத்தொகுதி)|வேடுவன் விண்மீன்குழாம்]] தொகுப்பில் அமைந்துள்ள  M4 வகை [[மாறுபடும் விண்மீன்|மாறுபடும் விண்மீன் ஆகும்]] .
 
 == மேற்கோள்கள் ==
 {{Reflist}}
 [[பகுப்பு:M வகை முதன்மை வரிசை விண்மீன்கள்]]
 [[பகுப்பு:வேடுவன் விண்மீன்குழாம்]]
 [[பகுப்பு:முதன்மை வரிசை விண்மீன்கள்]]