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OGLE-TR-123 is a binary stellar system containing one of the smallest main-sequence stars whose radius has been measured. It was discovered when the Optical Gravitational Lensing Experiment (OGLE) survey observed the smaller star eclipsing the larger primary. The orbital period is approximately 1.80 days.

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  • OGLE-TR-123 (en)
  • OGLE-TR-123 (zh)
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  • OGLE-TR-123是一個聯星系統。主星是已經測量出半徑最小的主序星。它是在光學重力透鏡實驗（OGLE）巡天中發現的，是軌道周期大約1.80天，由一顆較小的伴星掩蔽一顆較大主星的聯星系統。 估計較小的伴星，OGLE-TR-123b，半徑大約是0.13太陽半徑，質量大約0.085太陽質量（M☉），或木星質量的90倍。OGLE-TR-123b的質量接近恆星質量的下限。對進行氫融合的恆星，這個值大約是0.07或0.08M☉。OGLE-TR-123b是第二顆質量小於0.1M☉，而且已經測量出半徑的恆星；第一顆這樣的恆星是相似的OGLE-TR-122b。 (zh)
  • OGLE-TR-123 is a binary stellar system containing one of the smallest main-sequence stars whose radius has been measured. It was discovered when the Optical Gravitational Lensing Experiment (OGLE) survey observed the smaller star eclipsing the larger primary. The orbital period is approximately 1.80 days. (en)
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  • OGLE-TR-123 (en)
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  • F /M (en)
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  • OGLE-TR-123b (en)
  • OGLE-TR-123A (en)
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  • J2000.0 (en)
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  • OGLE-TR-123 is a binary stellar system containing one of the smallest main-sequence stars whose radius has been measured. It was discovered when the Optical Gravitational Lensing Experiment (OGLE) survey observed the smaller star eclipsing the larger primary. The orbital period is approximately 1.80 days. The smaller star, OGLE-TR-123b, is estimated to have a radius around 0.13 solar radii, and a mass of around 0.085 solar masses (M☉), or approximately 90 times Jupiter's. OGLE-TR-123b's mass is close to the lowest possible mass, estimated to be around 0.07 or 0.08 M☉, for a hydrogen-fusing star. OGLE-TR-123b is the second star with mass less than 0.1 M☉ whose radius has been directly measured; the first such star was the similar OGLE-TR-122b. (en)
  • OGLE-TR-123是一個聯星系統。主星是已經測量出半徑最小的主序星。它是在光學重力透鏡實驗（OGLE）巡天中發現的，是軌道周期大約1.80天，由一顆較小的伴星掩蔽一顆較大主星的聯星系統。 估計較小的伴星，OGLE-TR-123b，半徑大約是0.13太陽半徑，質量大約0.085太陽質量（M☉），或木星質量的90倍。OGLE-TR-123b的質量接近恆星質量的下限。對進行氫融合的恆星，這個值大約是0.07或0.08M☉。OGLE-TR-123b是第二顆質量小於0.1M☉，而且已經測量出半徑的恆星；第一顆這樣的恆星是相似的OGLE-TR-122b。 (zh)
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