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HD 34445 — звезда в созвездии Орион. Находится на расстоянии около 148 световых лет от Солнца. Вокруг звезды обращается, как минимум, шесть планет.
, HD 34445 är en ensam stjärna belägen i den … HD 34445 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Orion. Den har en skenbar magnitud av ca 7,31 och kräver åtminstone en stark handkikare för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 21,7 mas, beräknas den befinna sig på ett avstånd på ca 150 ljusår (ca 46 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -79 km/s.iocentrisk radialhastighet på ca -79 km/s.
, HD 34445是一顆視星等7的黃矮星，在天球上位於獵戶座。盖亚任务的恆星視差量測結果顯示它距離地球約148光年（45.4秒差距）。
, HD 34445 é uma estrela na constelação de O … HD 34445 é uma estrela na constelação de Orion. Tem uma magnitude aparente visual de 7,31, sendo invisível a olho nu. De acordo com dados de paralaxe, do segundo lançamento do catálogo Gaia, está localizada a uma distância de 150,5 anos-luz (46,2 parsecs) da Terra. Esta é uma estrela de classe G da sequência principal com um tipo espectral de G0V e temperatura efetiva de 5 836 K, sendo mais massiva e maior que o Sol, com 107% da massa solar e 138% do raio solar. Com uma magnitude absoluta de 4,04, esta estrela está 0,8 magnitudes acima da sequência principal, possuindo uma alta luminosidade igual ao dobro da solar. A alta luminosidade junto com um baixo nível de atividade cromosférica indicam uma idade alta, estimada em 8,5 bilhões de anos. HD 34445 tem uma metalicidade, a abundância de elementos além de hidrogênio e hélio, superior à solar, possuindo 138% da proporção de ferro do Sol. HD 34445 possui um grande sistema planetário de seis planetas extrassolares conhecidos. O planeta mais massivo foi o primeiro detectado e teve sua descoberta publicada em 2010, enquanto os outros cinco foram descobertos em 2017. Todos foram detectados por espectroscopia Doppler a partir de um total de 333 medições precisas de velocidade radial feitas por vários telescópios entre 1998 e 2014. Todos são planetas massivos com massas mínimas entre 0,05 e 0,63 vezes a massa de Júpiter (17 a 200 massas terrestres), e orbitam a estrela em órbitas quase circulares com semieixos maiores variando entre 0,27 e 2,08 UA e períodos entre 49 e 5700 dias.e 2,08 UA e períodos entre 49 e 5700 dias.
, HD 34445 est une étoile naine jaune de la constellation d'Orion. Elle est l'hôte d'un système multiplanétaire qui comprend au moins cinq voire six planètes, découvertes par la méthode des vitesses radialeset_al.''_2017_1-0" class="reference">.
, HD 34445 – gwiazda w gwiazdozbiorze Oriona, znajdująca się ok. 150 lat świetlnych od Słońca. Gwiazda ma układ planetarny złożony z sześciu planet.
, HD 34445 è una stella di settima magnitudi … HD 34445 è una stella di settima magnitudine situata nella costellazione di Orione, distante 150,5 anni luce dal sistema solare. Attorno a essa nel 2004 venne individuato un pianeta extrasolare gigante gassoso, confermato poi nel 2010. Nel 2017 sono stati scoperti altri cinque pianeti, tutti con masse significativamente maggiori di quelle della Terra, anch'essi giganti gassosi.le della Terra, anch'essi giganti gassosi.
, HD 34445 is een ster in het sterrenbeeld Orion (Orion). De ster is van het type G en heeft zes bevestigde exoplaneten. De ster is net iets groter dan de Zon en ligt op een afstand van 148 lichtjaar.
, HD 34445 is a star with multiple exoplanet … HD 34445 is a star with multiple exoplanetary companions in the equatorial constellation of Orion. With an apparent visual magnitude of 7.31, it is a 7th magnitude star that is too dim to be readily visible to the naked eye. The system is located at a distance of 150.5 light years from the Sun based on parallax measurements, but is drifting closer with a high radial velocity of −79 km/s. It is expected to draw as close as 57.5 light-years in ~492,000 years. This is an ordinary G-type main-sequence star with a stellar classification of G0 V, which means it is a Sun-like star that is generating energy through core hydrogen fusion. It is considered a metal-rich star, showing a much higher metallicity compared to the Sun. Despite this it is an older star and chromospherically quiet, lying about 0.8 magnitudes above the main sequence. This star is larger, hotter, brighter, and more massive than the Sun. It is spinning with a projected rotational velocity of ~3 km/s, giving it a rotation period of around 22 days.ng it a rotation period of around 22 days.
, HD 34445は、オリオン座の方角に約148光年の位置にある7等級の恒星である。
, HD 34445 ist ein Gelber Zwerg in einer Entfernung von etwa 150 Lichtjahren im Sternbild Orion. Der Stern hat eine ähnliche Masse wie die Sonne, ist aber etwas größer, deutlich leuchtkräftiger und scheint mit etwa 8,5 Mrd. Jahren auch älter zu sein.
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HD 34445 — звезда в созвездии Орион. Находится на расстоянии около 148 световых лет от Солнца. Вокруг звезды обращается, как минимум, шесть планет.
, HD 34445 ist ein Gelber Zwerg in einer Entfernung von etwa 150 Lichtjahren im Sternbild Orion. Der Stern hat eine ähnliche Masse wie die Sonne, ist aber etwas größer, deutlich leuchtkräftiger und scheint mit etwa 8,5 Mrd. Jahren auch älter zu sein.
, HD 34445は、オリオン座の方角に約148光年の位置にある7等級の恒星である。
, HD 34445 – gwiazda w gwiazdozbiorze Oriona, znajdująca się ok. 150 lat świetlnych od Słońca. Gwiazda ma układ planetarny złożony z sześciu planet.
, HD 34445 is een ster in het sterrenbeeld Orion (Orion). De ster is van het type G en heeft zes bevestigde exoplaneten. De ster is net iets groter dan de Zon en ligt op een afstand van 148 lichtjaar.
, HD 34445是一顆視星等7的黃矮星，在天球上位於獵戶座。盖亚任务的恆星視差量測結果顯示它距離地球約148光年（45.4秒差距）。
, HD 34445 est une étoile naine jaune de la constellation d'Orion. Elle est l'hôte d'un système multiplanétaire qui comprend au moins cinq voire six planètes, découvertes par la méthode des vitesses radialeset_al.''_2017_1-0" class="reference">.
, HD 34445 är en ensam stjärna belägen i den … HD 34445 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Orion. Den har en skenbar magnitud av ca 7,31 och kräver åtminstone en stark handkikare för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 21,7 mas, beräknas den befinna sig på ett avstånd på ca 150 ljusår (ca 46 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -79 km/s.iocentrisk radialhastighet på ca -79 km/s.
, HD 34445 é uma estrela na constelação de O … HD 34445 é uma estrela na constelação de Orion. Tem uma magnitude aparente visual de 7,31, sendo invisível a olho nu. De acordo com dados de paralaxe, do segundo lançamento do catálogo Gaia, está localizada a uma distância de 150,5 anos-luz (46,2 parsecs) da Terra.de 150,5 anos-luz (46,2 parsecs) da Terra.
, HD 34445 is a star with multiple exoplanet … HD 34445 is a star with multiple exoplanetary companions in the equatorial constellation of Orion. With an apparent visual magnitude of 7.31, it is a 7th magnitude star that is too dim to be readily visible to the naked eye. The system is located at a distance of 150.5 light years from the Sun based on parallax measurements, but is drifting closer with a high radial velocity of −79 km/s. It is expected to draw as close as 57.5 light-years in ~492,000 years.ose as 57.5 light-years in ~492,000 years.
, HD 34445 è una stella di settima magnitudi … HD 34445 è una stella di settima magnitudine situata nella costellazione di Orione, distante 150,5 anni luce dal sistema solare. Attorno a essa nel 2004 venne individuato un pianeta extrasolare gigante gassoso, confermato poi nel 2010. Nel 2017 sono stati scoperti altri cinque pianeti, tutti con masse significativamente maggiori di quelle della Terra, anch'essi giganti gassosi.le della Terra, anch'essi giganti gassosi.
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