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- 63_Ophiuchi abstract "63 Ophiuchi is an O-type giant star in the constellation Sagittarius, despite its name. During a 2009 survey for companions of massive stars, it was observed using speckle interferometry but no companion was found. Uncertain negative parallax measurements of –0.77 ± 0.40 mas suggest that this extremely luminous star may be located about 4000 light-years away. An estimate of the distance based on the strength of the Ca II line yields a more modest value of 2,605 ly (799 pc). The star lies only 0.3° north of the galactic plane.In 1983, astronomers from the Sternberg Astronomical Institute in Moscow, Russia identified a faint, shell-shaped nebula surrounding the star that was being excited by the star's energy. Named Sharpless 22, this ring-shaped nebula has a double-shell structure with an inner envelope spanning 45–50′ (9–18 pc), surrounded by a diffuse envelope some 65–80′ (14–29 pc) across. At an estimated mass loss rate of (6–8) × 10–6 M☉/yr, it would take the star about (1–5) × 105 years to produce such a nebula from the outflow of its stellar wind.".
- 63_Ophiuchi thumbnail Sagittarius_IAU.svg?width=300.
- 63_Ophiuchi wikiPageID "29561165".
- 63_Ophiuchi wikiPageRevisionID "589809270".
- 63_Ophiuchi appmagV "6.18".
- 63_Ophiuchi bV "+0.04".
- 63_Ophiuchi class "O8III".
- 63_Ophiuchi constell Sagittarius_(constellation).
- 63_Ophiuchi epoch "J2000.0".
- 63_Ophiuchi hasPhotoCollection 63_Ophiuchi.
- 63_Ophiuchi pError "0.4".
- 63_Ophiuchi parallax "−0.77".
- 63_Ophiuchi propMoDec "–2.63".
- 63_Ophiuchi propMoRa "1.66".
- 63_Ophiuchi radialV "–11".
- 63_Ophiuchi uB "–0.89".
- 63_Ophiuchi subject Category:Sagittarius_(constellation).
- 63_Ophiuchi type CelestialBody.
- 63_Ophiuchi type Star.
- 63_Ophiuchi type PhysicalBody.
- 63_Ophiuchi comment "63 Ophiuchi is an O-type giant star in the constellation Sagittarius, despite its name. During a 2009 survey for companions of massive stars, it was observed using speckle interferometry but no companion was found. Uncertain negative parallax measurements of –0.77 ± 0.40 mas suggest that this extremely luminous star may be located about 4000 light-years away. An estimate of the distance based on the strength of the Ca II line yields a more modest value of 2,605 ly (799 pc).".
- 63_Ophiuchi label "63 Ophiuchi".
- 63_Ophiuchi sameAs m.0ds71ws.
- 63_Ophiuchi sameAs Q4641944.
- 63_Ophiuchi sameAs Q4641944.
- 63_Ophiuchi wasDerivedFrom 63_Ophiuchi?oldid=589809270.
- 63_Ophiuchi depiction Sagittarius_IAU.svg.
- 63_Ophiuchi isPrimaryTopicOf 63_Ophiuchi.
- 63_Ophiuchi name "63 Ophiuchi".