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HD 7199 — звезда в созвездии Тукана на расстоянии около 117,4 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.
, HD 7199は、きょしちょう座にある8等星。周囲に1つの太陽系外惑星が発見されている。
, HD 7199 is a star in the constellation Tuc … HD 7199 is a star in the constellation Tucana located 118 light years distance from the Sun based on parallax. It has an orange hue but is too dim to be viewed with the naked eye, having an apparent visual magnitude of +8.06. The star is drifting further away from the Sun with a radial velocity of +5.6 km/s. The star HD 7199 is named Emiw. The name was selected in the NameExoWorlds campaign by Mozambique, during the 100th anniversary of the IAU. Emiw represents love in the local Makhuwa language. This object has a stellar classification of K1IV, matching a K-type subgiant star that is in the process of cooling and expanding off the main sequence, having exhausted the supply of hydrogen at its core. It is around 10 billion years old with a low projected rotational velocity of 2.2 km/s. The star looks to be very metal-rich, having more than double the abundance of iron compared to the Sun. Both mass and radius are lower that the Sun's, and it only radiates 70% of the Sun's luminosity. It displays a Sun-like magnetic activity cycle.splays a Sun-like magnetic activity cycle.
, HD 7199 é uma estrela na constelação de Tu … HD 7199 é uma estrela na constelação de Tucana. Com uma magnitude aparente visual de 8,03, é invisível a olho nu. De acordo com sua paralaxe anual, do segundo lançamento do catálogo Gaia, está localizada a uma distância de 118 anos-luz (36 parsecs) da Terra. Sua magnitude absoluta visual é 5,29. Esta estrela é classificada como uma subgigante de classe K com um tipo espectral de K1IV, indicando que é mais luminosa que uma estrela da sequência principal de mesma temperatura. Sua massa é estimada em 93% da massa solar e seu raio em 99% do raio solar. Sua fotosfera está brilhando com 72% da luminosidade solar e tem uma temperatura efetiva de 5 357 K. HD 7199 é uma estrela ativa e apresenta um ciclo magnético com período de mais de 7 anos, semelhante ao ciclo solar. Em 2011, foi publicada a descoberta de um planeta extrassolar de longo período orbitando HD 7199. Esse objeto tem uma massa mínima de 0,29 massa de Júpiter (comparável à massa de Saturno) e foi detectado por espectroscopia Doppler a partir de medições precisas da velocidade radial da estrela pelo espectrógrafo HARPS, após correções para anular variações causadas pelo ciclo da estrela. variações causadas pelo ciclo da estrela.
, Emiw eller HD 7199 är en ensam stjärna bel … Emiw eller HD 7199 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Tukanen. Den har en skenbar magnitud av ca 8,06 och kräver åtminstone en stark handkikare eller ett mindre teleskop för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 27,6 mas, beräknas den befinna sig på ett avstånd på ca 118 ljusår (ca 36 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca +6 km/s.liocentrisk radialhastighet på ca +6 km/s.
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| rdfs:comment |
HD 7199 is a star in the constellation Tuc … HD 7199 is a star in the constellation Tucana located 118 light years distance from the Sun based on parallax. It has an orange hue but is too dim to be viewed with the naked eye, having an apparent visual magnitude of +8.06. The star is drifting further away from the Sun with a radial velocity of +5.6 km/s. The star HD 7199 is named Emiw. The name was selected in the NameExoWorlds campaign by Mozambique, during the 100th anniversary of the IAU. Emiw represents love in the local Makhuwa language.esents love in the local Makhuwa language.
, HD 7199は、きょしちょう座にある8等星。周囲に1つの太陽系外惑星が発見されている。
, Emiw eller HD 7199 är en ensam stjärna bel … Emiw eller HD 7199 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Tukanen. Den har en skenbar magnitud av ca 8,06 och kräver åtminstone en stark handkikare eller ett mindre teleskop för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 27,6 mas, beräknas den befinna sig på ett avstånd på ca 118 ljusår (ca 36 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca +6 km/s.liocentrisk radialhastighet på ca +6 km/s.
, HD 7199 é uma estrela na constelação de Tu … HD 7199 é uma estrela na constelação de Tucana. Com uma magnitude aparente visual de 8,03, é invisível a olho nu. De acordo com sua paralaxe anual, do segundo lançamento do catálogo Gaia, está localizada a uma distância de 118 anos-luz (36 parsecs) da Terra. Sua magnitude absoluta visual é 5,29.rra. Sua magnitude absoluta visual é 5,29.
, HD 7199 — звезда в созвездии Тукана на расстоянии около 117,4 световых лет от нас. Вокруг звезды обращается, как минимум, одна планета.
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HD 7199
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