About: HD 50554

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HD 50554 is a single, Sun-like star with an exoplanetary companion in the northern constellation of Gemini. It has an apparent visual magnitude of +6.84, which makes it a 7th magnitude star; it is not visible to the naked eye, but can be viewed with binoculars or a telescope. The system is located at a distance of 102 light-years from the Sun based on parallax, but is drifting closer with a radial velocity of −4 km/s.

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dbo:abstract
  • HD 50554 ist ein etwa 98 Lichtjahre von der Erde entfernter, sonnenähnlicher Stern im Sternbild Zwillinge mit einer scheinbaren Helligkeit von ca. 6,8 mag. Im Jahre 2002 entdeckten Vogt et al. mit Hilfe der Radialgeschwindigkeitsmethode einen Exoplaneten-Kandidaten, der diesen Stern mit einer Periode von 1224 Tagen umkreist. Das Objekt mit der systematischen Bezeichnung HD 50554 b hat eine Mindestmasse von rund 5 Jupitermassen. Die große Halbachse der Umlaufbahn misst ca. 2,3 Astronomische Einheiten, ihre Exzentrizität 0,44. (de)
  • HD 50554 is a single, Sun-like star with an exoplanetary companion in the northern constellation of Gemini. It has an apparent visual magnitude of +6.84, which makes it a 7th magnitude star; it is not visible to the naked eye, but can be viewed with binoculars or a telescope. The system is located at a distance of 102 light-years from the Sun based on parallax, but is drifting closer with a radial velocity of −4 km/s. This is a yellow-white hued F-type main-sequence star with a stellar classification of F8V. Age estimates put it at around 2–3 billion years old. It has a Sun-like metallicity a low level of chromospheric activity and is spinning with a projected rotational velocity of 2.3 km/s. The star has a slightly higher mass and larger radius than the Sun. It is radiating 137% of the luminosity of the Sun from its photosphere at an effective temperature of 6,036 K. In 2001, a giant planet was announced by the European Southern Observatory, who used the radial velocity method. The discovery was confirmed in 2002 using observations from the lick and keck telescopes. An infrared excess indicates a debris disk is orbiting the star at a distance of 45 AU with a half-width of 4 AU. This may be an analog of the Kuiper belt at an earlier stage of its evolution, which suggests a Neptune-like planet could be orbiting at its inner edge. (en)
  • HD 50554は、地球から見て、ふたご座の方角に約100光年離れた位置にある恒星である。 (ja)
  • HD 50554 é uma estrela na constelação de Gemini. Tem uma magnitude aparente de 6,84, sendo invisível a olho nu, mas facilmente visível com um telescópio ou binóculo. De acordo com medições de paralaxe feitas na missão Hipparcos, encontra-se relativamente próxima do Sistema Solar, a uma distância de 98 anos-luz (29,9 parsecs). HD 50554 tem uma classificação estelar de F8 V, o que significa que é uma estrela de classe F da sequência principal. Tem uma massa de 1,04 vezes a massa do Sol e um raio de 1,11 vezes o raio solar. Irradia energia de sua atmosfera externa a uma temperatura efetiva de 5 902 K. Sua idade de 4,58 bilhões de anos é parecida à do Sol, e seu conteúdo metálico é um pouco menor que o do Sol, com uma abundância em ferro de 85% da abundância solar. Em 2002 foi descoberto pelo método da velocidade radial um planeta extrassolar orbitando HD 50554. É um gigante gasoso com uma massa mínima de 4,46 vezes a massa de Júpiter. Orbita a estrela numa órbita moderadamente excêntrica com um semieixo maior de 2,28 UA e um período de 1 224 dias. (pt)
  • HD 50554 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Tvillingarna. Den har en skenbar magnitud av ca 6,84 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 33,4 mas, beräknas den befinna sig på ett avstånd på ca 98 ljusår (ca 30 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -4 km/s. (sv)
  • HD 50554 — одиночная звезда в созвездии Близнецов на расстоянии приблизительно 102 световых лет (около 31 парсека) от Солнца. Видимая звёздная величина звезды — +6,86m. Возраст звезды определён как около 2,16 млрд лет. Вокруг звезды обращается, как минимум, одна планета. (ru)
  • HD 50554是双子座中的一颗恒星,距离我们大约98光年(30秒差距)。 (zh)
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dbp:absmagV
  • 4.460000 (xsd:double)
dbp:appmagV
  • +6.84 (en)
dbp:class
  • F8V (en)
dbp:constell
dbp:disk
  • Disk (en)
dbp:eccentricity
  • 0.444000 (xsd:double)
dbp:epe
  • HD+50554 (en)
dbp:epoch
  • J2000.0 (en)
dbp:exoplanet
dbp:mass
  • >4.46 ± 0.48 (en)
dbp:pError
  • 0.056700 (xsd:double)
dbp:parallax
  • 32.057000 (xsd:double)
dbp:periapsis
  • 45 (xsd:integer)
dbp:period
  • 1224 (xsd:integer)
dbp:propMoDec
  • −96.881 (en)
dbp:propMoRa
  • −35.915 (en)
dbp:rotationalVelocity
  • 2.300000 (xsd:double)
dbp:semimajor
  • 2.280000 (xsd:double)
dbp:simbad
  • HD+50554 (en)
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rdfs:comment
  • HD 50554 ist ein etwa 98 Lichtjahre von der Erde entfernter, sonnenähnlicher Stern im Sternbild Zwillinge mit einer scheinbaren Helligkeit von ca. 6,8 mag. Im Jahre 2002 entdeckten Vogt et al. mit Hilfe der Radialgeschwindigkeitsmethode einen Exoplaneten-Kandidaten, der diesen Stern mit einer Periode von 1224 Tagen umkreist. Das Objekt mit der systematischen Bezeichnung HD 50554 b hat eine Mindestmasse von rund 5 Jupitermassen. Die große Halbachse der Umlaufbahn misst ca. 2,3 Astronomische Einheiten, ihre Exzentrizität 0,44. (de)
  • HD 50554は、地球から見て、ふたご座の方角に約100光年離れた位置にある恒星である。 (ja)
  • HD 50554 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Tvillingarna. Den har en skenbar magnitud av ca 6,84 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 33,4 mas, beräknas den befinna sig på ett avstånd på ca 98 ljusår (ca 30 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -4 km/s. (sv)
  • HD 50554 — одиночная звезда в созвездии Близнецов на расстоянии приблизительно 102 световых лет (около 31 парсека) от Солнца. Видимая звёздная величина звезды — +6,86m. Возраст звезды определён как около 2,16 млрд лет. Вокруг звезды обращается, как минимум, одна планета. (ru)
  • HD 50554是双子座中的一颗恒星,距离我们大约98光年(30秒差距)。 (zh)
  • HD 50554 is a single, Sun-like star with an exoplanetary companion in the northern constellation of Gemini. It has an apparent visual magnitude of +6.84, which makes it a 7th magnitude star; it is not visible to the naked eye, but can be viewed with binoculars or a telescope. The system is located at a distance of 102 light-years from the Sun based on parallax, but is drifting closer with a radial velocity of −4 km/s. (en)
  • HD 50554 é uma estrela na constelação de Gemini. Tem uma magnitude aparente de 6,84, sendo invisível a olho nu, mas facilmente visível com um telescópio ou binóculo. De acordo com medições de paralaxe feitas na missão Hipparcos, encontra-se relativamente próxima do Sistema Solar, a uma distância de 98 anos-luz (29,9 parsecs). (pt)
rdfs:label
  • HD 50554 (de)
  • HD 50554 (en)
  • HD 50554 (ja)
  • HD 50554 (pt)
  • HD 50554 (sv)
  • HD 50554 (ru)
  • HD 50554 (zh)
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