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りゅう座7番星（りゅうざ7ばんせい、7 Dra / 7 Draconis）は、りゅう座の恒星で5等星。
, 7 Draconis, also named Tianyi /tiænˈjiː/, … 7 Draconis, also named Tianyi /tiænˈjiː/, is a single star in the northern circumpolar constellation of Draco. It is visible to the naked eye as a faint orange-hued star with a stellar classification of 5.43. Based upon an annual parallax shift of 4.16 mas as seen from the Earth, the star is located approximately 780 light-years from the Sun. This is an evolved giant star with a stellar classification of K5 III. The measured angular diameter of this star, after correction for limb darkening, is 2.61±0.03 mas. At its estimated distance, this yields a physical size of about 67 times the radius of the Sun. It is radiating about 1,024 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 3,945 K.re at an effective temperature of 3,945 K.
, 天龍座7，又名BD+67 764，HD 111335、SAO 15902、HR 4863，是天龍座的一颗恒星，视星等为5.43，位于銀經123.53，銀緯50.33，其B1900.0坐标为赤經12h 43m 29.2s，赤緯+67° 50.33′ 11″。
, 7 Draconis, som är stjärnans Flamsteed-bet … 7 Draconis, som är stjärnans Flamsteed-beteckning, eller Tianyi, är en ensam stjärna i den mellersta delen av stjärnbilden Draken, Den har en genomsnittlig skenbar magnitud på ca 5,54 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 4,2 mas, beräknas den befinna sig på ett avstånd på ca 780 ljusår (ca 240 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 11 km/s.liocentrisk radialhastighet på ca 11 km/s.
, 7 Draconis (Tianyi, 7 Dra) – gwiazda w gwiazdozbiorze Smoka. Jest odległa od Słońca o około 741 lat świetlnych.
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りゅう座7番星（りゅうざ7ばんせい、7 Dra / 7 Draconis）は、りゅう座の恒星で5等星。
, 7 Draconis (Tianyi, 7 Dra) – gwiazda w gwiazdozbiorze Smoka. Jest odległa od Słońca o około 741 lat świetlnych.
, 7 Draconis, also named Tianyi /tiænˈjiː/, … 7 Draconis, also named Tianyi /tiænˈjiː/, is a single star in the northern circumpolar constellation of Draco. It is visible to the naked eye as a faint orange-hued star with a stellar classification of 5.43. Based upon an annual parallax shift of 4.16 mas as seen from the Earth, the star is located approximately 780 light-years from the Sun.pproximately 780 light-years from the Sun.
, 7 Draconis, som är stjärnans Flamsteed-bet … 7 Draconis, som är stjärnans Flamsteed-beteckning, eller Tianyi, är en ensam stjärna i den mellersta delen av stjärnbilden Draken, Den har en genomsnittlig skenbar magnitud på ca 5,54 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 4,2 mas, beräknas den befinna sig på ett avstånd på ca 780 ljusår (ca 240 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 11 km/s.liocentrisk radialhastighet på ca 11 km/s.
, 天龍座7，又名BD+67 764，HD 111335、SAO 15902、HR 4863，是天龍座的一颗恒星，视星等为5.43，位于銀經123.53，銀緯50.33，其B1900.0坐标为赤經12h 43m 29.2s，赤緯+67° 50.33′ 11″。
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內廚一
, 7 Draconis
, りゅう座7番星
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