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Statements

Subject Item
dbr:S55_(star)
rdf:type
owl:Thing dbo:CelestialBody dbo:Place dbo:Location schema:Place dbo:Star
rdfs:label
S0-102 S0-102 S0-102 S0-102 S55 (star) S0-102 S0-102
rdfs:comment
S0-102 ist ein Stern im Galaktischen Zentrum. Er befindet sich in einer Umlaufbahn um die Radioquelle Sagittarius A* und umläuft diese einmal in 11,5 ± 0,3 Jahren. Damit unterbietet er den bisherigen Rekordhalter S0-2 um 5 Jahre. Auf seiner Umlaufbahn nähert er sich dem Mittelpunkt der Milchstraße auf 39 Milliarden Kilometer (260 AE, bzw. 36 Lichtstunden) an und erreicht dabei ca. 1 % der Lichtgeschwindigkeit. S0-102，是一颗恒星，十分靠近银河系中心，并接近无线电波源人马座A*，环绕其运行的周期为11.5年。 该恒星于2012年发现，为迄今已发现的距银河系中心黑洞最近的恒星，是由洛杉矶加州大学教授（Andrea M. Ghez）领导的小组发现的。 凱克天文台自2000到2012年間觀測S0-102的運動，並得知了它以順時針方向環繞人马座A* 的完整軌道。觀測人马座A*中心附近兩顆恆星完整週期的軌道運動可以求得人马座A*的重力位。而這些恆星周圍可能有大量暗物質存在。通过研究该恒星，可以观察该恒星受到黑洞附近扭曲时空的影响，有助于验证广义相对论。 S55 (also known as S0–102) is a star that is located very close to the centre of the Milky Way, near the radio source Sagittarius A*, orbiting it with an orbital period of 12.8 years. Until 2019, when the star S62 became the new record holder, it was the star with the shortest known period orbiting the black hole at the centre of the Milky Way. This beat the record of 16 years previously set by S2. The star was identified by a University of California, Los Angeles team headed by Andrea M. Ghez. At its periapsis, its speed reaches 1.7% of the speed of light. At that point it is 246 astronomical units (34 light hours, 36.7 billion km) from the centre, while the black hole radius is only a small fraction of that size (the Schwarzschild radius is about 0.082 au). It passed that point in 2009 a S0-102 è una stella situata vicino al centro della Via Lattea, in prossimità della radiosorgente e probabile buco nero supermassiccio Sagittarius A*, attorno al quale orbita con un periodo di 11,5 ± 0,3 anni. Il suo cambiamento di posizione apparente è stato monitorato dal 2000 al 2012 dai Telescopi Keck, che ne hanno osservato una rivoluzione completa attorno a Sagittarius A*. S0-102 è, al febbraio 2013, la stella col minimo periodo di rivoluzione attorno al centro galattico (circa 11,5 anni), minore anche di quello della stella S2 (circa 16 anni). S0-102 ou S-55 est une étoile qui se trouve située très près du centre de la Voie lactée, en orbite près de la source radio Sagittarius A*, avec une période orbitale de 11,5 ans ou de 12,8 ans suivant les sources. S0-102는 우리 은하 중심부에 있는 강력한 전파원 궁수자리 A*와 아주 가까이 있는 항성이다. S0-102 — звезда S-класса, обращающаяся вокруг радиоисточника Стрелец A* — сверхмассивной чёрной дыры в центре Млечного Пути. Звезда, открытая в 2012 году, совершает полный оборот вокруг Стрельца A* за 11,5 ± 0,3 года. Это звезда имеет один из самых малых периодов обращения вокруг чёрной дыры.
foaf:name
S55
dbp:name
Sagittarius A*
dcterms:subject
dbc:Sagittarius_(constellation)
dbo:wikiPageID
37240862
dbo:wikiPageRevisionID
1096961465
dbo:wikiPageWikiLink
dbr:Periapsis dbc:Sagittarius_(constellation) dbr:Very_Large_Telescope dbr:Dark_matter dbr:S2_(star) dbr:S62_(star) dbr:Schwarzschild_radius dbr:University_of_California,_Los_Angeles dbr:Gravitational_potential dbr:Gravitational_redshift dbr:Sagittarius_(constellation) dbr:Speed_of_light dbr:Sagittarius_A* dbr:J2000 dbr:W._M._Keck_telescope dbr:Astronomical_units dbr:Andrea_M._Ghez
dbo:wikiPageExternalLink
n4:1225506s.pdf%7Ctitle=Supplementary n19:2012-10-astronomers-star-black-hole-milky.html%7Ctitle=Astronomers
owl:sameAs
dbpedia-ru:S0-102 n14:44LDK dbpedia-de:S0-102 dbpedia-fr:S0-102 dbpedia-ko:S0-102 wikidata:Q4387860 dbpedia-zh:S0-102 dbpedia-it:S0-102
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dbp:constell
dbr:Sagittarius_(constellation)
dbp:epoch
dbr:J2000
dbo:abstract
S0-102는 우리 은하 중심부에 있는 강력한 전파원 궁수자리 A*와 아주 가까이 있는 항성이다. S0-102 ou S-55 est une étoile qui se trouve située très près du centre de la Voie lactée, en orbite près de la source radio Sagittarius A*, avec une période orbitale de 11,5 ans ou de 12,8 ans suivant les sources. S0-102，是一颗恒星，十分靠近银河系中心，并接近无线电波源人马座A*，环绕其运行的周期为11.5年。 该恒星于2012年发现，为迄今已发现的距银河系中心黑洞最近的恒星，是由洛杉矶加州大学教授（Andrea M. Ghez）领导的小组发现的。 凱克天文台自2000到2012年間觀測S0-102的運動，並得知了它以順時針方向環繞人马座A* 的完整軌道。觀測人马座A*中心附近兩顆恆星完整週期的軌道運動可以求得人马座A*的重力位。而這些恆星周圍可能有大量暗物質存在。通过研究该恒星，可以观察该恒星受到黑洞附近扭曲时空的影响，有助于验证广义相对论。 S55 (also known as S0–102) is a star that is located very close to the centre of the Milky Way, near the radio source Sagittarius A*, orbiting it with an orbital period of 12.8 years. Until 2019, when the star S62 became the new record holder, it was the star with the shortest known period orbiting the black hole at the centre of the Milky Way. This beat the record of 16 years previously set by S2. The star was identified by a University of California, Los Angeles team headed by Andrea M. Ghez. At its periapsis, its speed reaches 1.7% of the speed of light. At that point it is 246 astronomical units (34 light hours, 36.7 billion km) from the centre, while the black hole radius is only a small fraction of that size (the Schwarzschild radius is about 0.082 au). It passed that point in 2009 and will be there again in 2022. Its position in the sky has been monitored from 2000 to 2012 using the W. M. Keck telescope and from 2002 to 2016 with the VLT. One complete orbit has been observed. From Earth's current perspective, it travels in a clockwise direction. Having observed two stars orbiting through complete periods around the centre (S55 and S2), the gravitational potential of SgrA* could be established. It is also possible that there is a great deal of dark matter around the orbits of these stars. Also general relativistic effects due to gravitational redshift should become observable. S0-102 è una stella situata vicino al centro della Via Lattea, in prossimità della radiosorgente e probabile buco nero supermassiccio Sagittarius A*, attorno al quale orbita con un periodo di 11,5 ± 0,3 anni. Il suo cambiamento di posizione apparente è stato monitorato dal 2000 al 2012 dai Telescopi Keck, che ne hanno osservato una rivoluzione completa attorno a Sagittarius A*. S0-102 è, al febbraio 2013, la stella col minimo periodo di rivoluzione attorno al centro galattico (circa 11,5 anni), minore anche di quello della stella S2 (circa 16 anni). Come termine di paragone il Sole ha un periodo di rivoluzione di circa 225 milioni di anni (periodo detto anno galattico). S0-102 — звезда S-класса, обращающаяся вокруг радиоисточника Стрелец A* — сверхмассивной чёрной дыры в центре Млечного Пути. Звезда, открытая в 2012 году, совершает полный оборот вокруг Стрельца A* за 11,5 ± 0,3 года. Это звезда имеет один из самых малых периодов обращения вокруг чёрной дыры. S0-102 ist ein Stern im Galaktischen Zentrum. Er befindet sich in einer Umlaufbahn um die Radioquelle Sagittarius A* und umläuft diese einmal in 11,5 ± 0,3 Jahren. Damit unterbietet er den bisherigen Rekordhalter S0-2 um 5 Jahre. Auf seiner Umlaufbahn nähert er sich dem Mittelpunkt der Milchstraße auf 39 Milliarden Kilometer (260 AE, bzw. 36 Lichtstunden) an und erreicht dabei ca. 1 % der Lichtgeschwindigkeit. Die Beobachtung von S0-102 erfolgte über mehr als einen Umlaufzyklus von 1995 bis 2012 am Keck-Observatorium mit Hilfe von adaptiver Optik und Speckle-Interferometrie. Da er 16-mal lichtschwächer ist als der (ohnehin schwer zu beobachtende) Stern S0-2, konnte man ihn erst spät vom Infrarothintergrund unterscheiden. Er war nach S0-2 der zweite Stern, dessen Orbit um das supermassereiche Schwarze Loch Sagittarius A* sehr genau vermessen werden konnte.
dbp:appmagK
17.2
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wikipedia-en:S55_(star)?oldid=1096961465&ns=0
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5474
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wikipedia-en:S55_(star)