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CM Draconis is een drievoudige ster in het … CM Draconis is een drievoudige ster in het sterrenbeeld Draco, met magnitude van +12,90 en met een spectraalklasse van M4.5V, M4.5V en DB. De ster bevindt zich op 48,47 lichtjaar van de zon. De twee rode dwergen vormen samen het paar CM Draconis A, met in een wijde baan daaromheen de witte dwerg CM Draconis B.n daaromheen de witte dwerg CM Draconis B.
, CM Draconis (GJ 630.1A) is an eclipsing bi … CM Draconis (GJ 630.1A) is an eclipsing binary system approximately 47 light-years away in the constellation of Draco (the Dragon). The system consists of two nearly identical red dwarf stars located in the constellation Draco. The two stars orbit each other with a period of 1.27 days with a separation of 2.7 million kilometres (0.018 AU). Along with two stars in the triple system KOI 126, the stars in CM Draconis are the lightest stars with precisely measured masses and radii. Consequently, the system plays an important role in testing stellar structure models for very low mass stars. These comparisons find that models underpredict the stellar radii by approximately 5%. This is attributed to consequences of the stars' strong magnetic activity. According to the system's entry in the Combined General Catalogue of Variable Stars, at least one of the components is a flare star and at least one is a BY Draconis variable. The white dwarf star GJ 630.1B, located 25.7 arcseconds away shares the same proper motion as the CM Draconis stars and is thus a true companion star of the system. Given the system's distance of 47 light years, this corresponds to a separation of at least 370 astronomical units between CM Draconis and GJ 630.1B.l units between CM Draconis and GJ 630.1B.
, CM Дракона, (англ. CM Draconis) — двойная звезда, которая находится в созвездии Дракон на расстоянии около 47,3 световых лет от нас. Звезда, возможно, имеет третью компоненту — красный карлик.
, CM Draconis es un sistema estelar en la co … CM Draconis es un sistema estelar en la constelación de Draco, el dragón, de magnitud aparente +12,90. Aunque inicialmente se pensaba que distaba 47,3 años luz del Sistema Solar, estudios más recientes le sitúan a una distancia de 54 - 55 años luz. El sistema de CM Draconis está formado por un par de estrellas muy próximas, CM Draconis Aab, separadas 420 UA de una tercera estrella, CM Draconis B. Esta última, también conocida como LHS 422, GJ 630.1 B y WD 1633+571,es una enana blanca de tipo espectral DQ8 con una luminosidad 0,00018 veces menor que la solar y un tamaño similar al de la Tierra. El sistema binario CM Draconis Aab (LHS 421, GJ 630.1 A) es una binaria espectroscópica y binaria eclipsante. Está compuesta por dos enanas rojas de tipo M4.5V con una luminosidad conjunta del 1,03% de la del Sol. Su período orbital es de 1,27 días y la separación entre ambas es 3,76 veces el radio solar, pero no llega a ser una binaria de contacto. Ambas son estrellas fulgurantes aunque con un bajo índice de actividad, estando catalogadas como variables BY Draconis. Su alta velocidad espacial de 164 km/s y el bajo índice de erupciones indica su probable estatus de estrellas de Población II, en concordancia con su edad estimada de 9000 millones de años.u edad estimada de 9000 millones de años.
, 天龍座CM（CM Draconis，或 GJ 630.1A）是一組距離地球約47光年 … 天龍座CM（CM Draconis，或 GJ 630.1A）是一組距離地球約47光年的食雙星，在天球上位於天龍座。該系統的兩顆恆星是幾乎相同的紅矮星，兩者互繞週期是1.27日，距離270萬公里。這兩顆星還和 KOI 126組成三合星系統，而後者是系統中質量最低、半徑最小的；因此這個恆星系統在極低質量恆星結構模型的研究上扮演重要角色。這些比較發現模型預測的恆星半徑比實際狀況低約5%，這是因為恆星的磁場強烈活動的結果。根據變星總表，至少一顆成員星是耀星，另外至少有一顆天龍座BY型變星。一顆白矮星 GJ 630.1B 在天球上距離該系統25.7角秒，並且和天龍座CM有相同的自行，因此被認為是系統的成員星。基於該恆星系距離地球約47光年，因此天龍座CM和 GJ 630.1B 距離至少370天文單位。系距離地球約47光年，因此天龍座CM和 GJ 630.1B 距離至少370天文單位。
, CM Draconis (GJ 630.1 A) est un système tr … CM Draconis (GJ 630.1 A) est un système triple de la constellation du Dragon, localisé à environ ∼48,4 a.l. (∼14,8 pc) de la Terre. Il comprend une première paire de naines rouges de même type, désignées CM Draconis Aa et Ab, dont les propriétés ont été déterminées avec précision. À cela s'ajoute la troisième composante, CM Draconis B, qui est une naine blanche située à environ 25 secondes d'arc des deux autres étoiles.25 secondes d'arc des deux autres étoiles.
, CM Дракона, (англ. CM Draconis) — затемнювано-кратна зоряна система у сузір’ї Дракона на відстані приблизно 47 світлових років від Сонячної системи.
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CM Дракона, (англ. CM Draconis) — двойная звезда, которая находится в созвездии Дракон на расстоянии около 47,3 световых лет от нас. Звезда, возможно, имеет третью компоненту — красный карлик.
, 天龍座CM（CM Draconis，或 GJ 630.1A）是一組距離地球約47光年 … 天龍座CM（CM Draconis，或 GJ 630.1A）是一組距離地球約47光年的食雙星，在天球上位於天龍座。該系統的兩顆恆星是幾乎相同的紅矮星，兩者互繞週期是1.27日，距離270萬公里。這兩顆星還和 KOI 126組成三合星系統，而後者是系統中質量最低、半徑最小的；因此這個恆星系統在極低質量恆星結構模型的研究上扮演重要角色。這些比較發現模型預測的恆星半徑比實際狀況低約5%，這是因為恆星的磁場強烈活動的結果。根據變星總表，至少一顆成員星是耀星，另外至少有一顆天龍座BY型變星。一顆白矮星 GJ 630.1B 在天球上距離該系統25.7角秒，並且和天龍座CM有相同的自行，因此被認為是系統的成員星。基於該恆星系距離地球約47光年，因此天龍座CM和 GJ 630.1B 距離至少370天文單位。系距離地球約47光年，因此天龍座CM和 GJ 630.1B 距離至少370天文單位。
, CM Draconis (GJ 630.1A) is an eclipsing bi … CM Draconis (GJ 630.1A) is an eclipsing binary system approximately 47 light-years away in the constellation of Draco (the Dragon). The system consists of two nearly identical red dwarf stars located in the constellation Draco. The two stars orbit each other with a period of 1.27 days with a separation of 2.7 million kilometres (0.018 AU). Along with two stars in the triple system KOI 126, the stars in CM Draconis are the lightest stars with precisely measured masses and radii. Consequently, the system plays an important role in testing stellar structure models for very low mass stars. These comparisons find that models underpredict the stellar radii by approximately 5%. This is attributed to consequences of the stars' strong magnetic activity.es of the stars' strong magnetic activity.
, CM Дракона, (англ. CM Draconis) — затемнювано-кратна зоряна система у сузір’ї Дракона на відстані приблизно 47 світлових років від Сонячної системи.
, CM Draconis es un sistema estelar en la constelación de Draco, el dragón, de magnitud aparente +12,90. Aunque inicialmente se pensaba que distaba 47,3 años luz del Sistema Solar, estudios más recientes le sitúan a una distancia de 54 - 55 años luz.
, CM Draconis is een drievoudige ster in het … CM Draconis is een drievoudige ster in het sterrenbeeld Draco, met magnitude van +12,90 en met een spectraalklasse van M4.5V, M4.5V en DB. De ster bevindt zich op 48,47 lichtjaar van de zon. De twee rode dwergen vormen samen het paar CM Draconis A, met in een wijde baan daaromheen de witte dwerg CM Draconis B.n daaromheen de witte dwerg CM Draconis B.
, CM Draconis (GJ 630.1 A) est un système tr … CM Draconis (GJ 630.1 A) est un système triple de la constellation du Dragon, localisé à environ ∼48,4 a.l. (∼14,8 pc) de la Terre. Il comprend une première paire de naines rouges de même type, désignées CM Draconis Aa et Ab, dont les propriétés ont été déterminées avec précision. À cela s'ajoute la troisième composante, CM Draconis B, qui est une naine blanche située à environ 25 secondes d'arc des deux autres étoiles.25 secondes d'arc des deux autres étoiles.
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, 天龍座CM
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