Editing SS 433 (section)

{{Short description|Binary star system in the constellation Aquila}}
{{Starbox begin
|name=SS 433
}}
{{Starbox image
|image=[[File:W50 medium.jpg|280px]]
|caption=SS 433 at the centre of [[supernova remnant]] [[Westerhout 50|W50]]
|credit=NRAO/AUI/NSF, K. Golap, M. Goss; NASA’s Wide Field Survey Explorer (WISE)
}}
{{Starbox observe
|epoch=[[J2000.0]] ([[International Celestial Reference System|ICRS]])
|constell=[[Aquila (constellation)|Aquila]]
|ra={{RA|19|11|49.56}}<ref name=dr3/>
|dec={{DEC|+04|58|57.8}}<ref name=dr3/>
|appmag_v=13.0 - 17.3<ref name=gcvs/>
}}
{{Starbox character
| class=A7Ib
| variable=[[Eclipsing binary]]<ref name=gcvs>{{cite journal|bibcode=2009yCat....102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S|volume=1|pages=B/gcvs|display-authors=etal|last1=Samus|first1=N. N.|last2=Durlevich|first2=O. V.|year=2009}}</ref>
}}
{{Starbox astrometry
| prop_mo_ra= −3.027<ref name=dr3/>
| prop_mo_dec= −4.777<ref name=dr3/>
| parallax= 0.1182
| p_error= 0.0233
| parallax_footnote = <ref name=dr3>{{cite Gaia DR3|4293406612283985024}}</ref>
| dist_pc={{val|5500|200|fmt=commas}}<ref name="asym">{{cite journal|last1=Blundell|first1=Katherine M.|author-link1=Katherine Blundell|last2=Bowler|first2=Michael G.|title=Symmetry in the Changing Jets of SS 433 and Its True Distance from Us|journal=[[The Astrophysical Journal]]|volume=616|issue=2|year=2004|pages=L159–L162|issn=0004-637X|doi=10.1086/426542|arxiv=astro-ph/0410456|bibcode=2004ApJ...616L.159B|s2cid=11213274}}</ref><ref name=jeffphd>{{cite thesis|degree=DPhil|publisher=University of Oxford|url=https://ora.ox.ac.uk/objects/uuid:b9f5657b-a122-464f-8c55-db349ba74c4c|title=The remarkable outflows from the galactic microquasar SS433|first= Robert|last=Jeffrey|date=2016|id={{EThOS|uk.bl.ethos.730205}}|website=ora.ox.ac.uk}} {{free access}}</ref>
| dist_ly={{val|18,000|700|fmt=commas}}
| absmag_v=
}}
{{Starbox orbit
|reference=<ref name=Cherepashchuk>{{cite journal|doi=10.1093/mnrasl/slab083|arxiv=2107.09005|bibcode=2021MNRAS.507L..19C|title=Discovery of orbital eccentricity and evidence for orbital period increase of SS433|year=2021|last1=Cherepashchuk|first1=A. M.|last2=Belinski|first2=A. A.|last3=Dodin|first3=A. V.|last4=Postnov|first4=K. A.|journal=Monthly Notices of the Royal Astronomical Society: Letters|volume=507|issue=1|pages=L19–L23|doi-access=free }}</ref>
|period_unitless=13.082 d
|eccentricity=0.05 ± 0.01
|inclination=79
}}
{{Starbox catalog
|names=V1343 Aql, [[GAL (astronomical catalogue)|GAL]] 039.7-02.0, [[2MASS]] J19114957+0458578, [[USNO]] 659, 1A 1909+04, [[87GB]] 190920.8+045332, [[NEK (astronomical catalogue)|NEK]] 40.1-02.1, [[List of astronomical catalogues#0-9|3A]] 1909+048, [[GPS]] 1909+049, [[RGB]] J1911+049, BWE 1909+0453, [[GRS (astronomical catalogue)|GRS]] 039.60 -01.80, [[ROSAT|RX]] J1911.7+0459, [[Fourth Cambridge Survey|4C]] 04.66, [[1H (astronomical catalogue)|1H]] 1908+047, [[1RXS]] J191149.7+045857, [[Einstein Observatory|2E]] 1909.3+0453, [[HBHA]] 204-02, [[AAVSO]] 1906+04, [[Einstein Observatory|2E]] 4204, [[INTEGRAL1]] 110, [[TXS]] 1909+048, [[1ES]] 1909+04.8, [[INTREF]] 969, [[4U (astronomical catalogue)|4U]] 1908+05. }}
{{Starbox reference | Simbad=SS+433}}
{{Starbox end}}

'''SS 433''' is a [[microquasar]] or [[eclipsing binary|eclipsing]] [[X-ray binary]] [[stellar system|system]], consisting of a stellar-mass [[black hole]] [[accretion (astrophysics)|accreting]] matter from an [[A-type star|A-type]] [[companion star]].<ref name=Cherepashchuk/><ref>{{cite journal|bibcode=2004ApJ...615..422H|title=Identification of the Mass Donor Star's Spectrum in SS 433|journal=The Astrophysical Journal|volume=615|issue=1|pages=422–431|last1=Hillwig|first1=T. C.|last2=Gies|first2=D. R.|last3=Huang|first3=W.|last4=McSwain|first4=M. V.|last5=Stark|first5=M. A.|last6=Van Der Meer|first6=A.|last7=Kaper|first7=L.|year=2004|doi=10.1086/423927|arxiv=astro-ph/0403634|s2cid=17930915}}</ref> SS 433 is the first discovered microquasar.<ref name="darling" /> It is at the centre of the supernova remnant [[W50 (nebula)|W50]].

SS 433's designation comes from the initials of two astronomers at [[Case Western Reserve University]]: [[Nicholas Sanduleak]] and [[Charles Bruce Stephenson]]. It was the 433rd entry in their 1977 catalog of stars with strong emission lines.<ref name="darling">[http://www.daviddarling.info/encyclopedia/S/SS_433.html SS 433], David Darling, entry in ''The Internet Encyclopedia of Science'', accessed on line September 14, 2007.</ref> Its emission lines were studied by [[Mordehai Milgrom]] in 1979.<ref>{{cite journal|author=Milgrom, Mordehai|title=Thomson scattered lines in the spectrum of SS 433 - A powerful tool for studying the system|journal=Astronomy and Astrophysics|volume=78|issue=3|date=October 1979|pages=L17–L20|bibcode=1979A&A....78L..17M}}</ref>