親子觀星會

討論區 => 天文新知 => 主題作者是: peter 於 2022-10-04 10:27:03



主題: TESS發現更適合系外行星1顆超級地球和 2顆迷你海王星 TOI 411.01 and 411.02
作者: peter2022-10-04 10:27:03
https://www.cnbeta.com/articles/science/1323557.htm

https://theconversation.com/super-earths-are-bigger-more-common-and-more-habitable-than-earth-itself-and-astronomers-are-discovering-more-of-the-billions-they-think-are-out-there-190496

其中一颗被发现的行星比地球大30%左右,在三天内围绕其恒星运行。他们发现的第二颗行星比地球大约70%,他们认为它可能是深海的家园。如果这些信念是真的,那么这两颗宜居行星可能比地球更适合居住。

 HD 22946 (TOI 411 )

https://www.universetoday.com/157775/tess-finds-a-super-earth-and-two-mini-neptunes-in-a-single-system/ 

 three-planet system orbiting a Sun-like star (HD 22946, or TOI 11) located about 205.5 light-years

 =>typo   應該  TOI 411 

 有1顆超級地球約地球半徑 1.72 倍   TOI 411 b , 和   2 個 迷你海王星 地球半徑 2.74 倍 TOI 411c   3.43倍  TOI 411 d   

 TOI 411.01 and 411.02 (planets c and b) – 軌道 9.57 and 4.04 天 約 .   130%大小 軌道 46天
They also detected a single transit-like signal that indicated the presence of a third planet (the Super-Earth) with a period of about 46 day   


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更早前  8月 
https://phys.org/news/2022-08-planets-orbiting-nearby-star-tess.html
 TOI-836  TOI-836 b and TOI-836 c