OGLE-2006-BLG-109L




OGLE-2006-BLG-109L


OGLE-2006-BLG-109L location.svg
OGLE-2006-BLG-109L 在人馬座中的位置（綠色圈）
觀測資料
曆元 J2000.0

星座


人馬座


星官




赤經

17h 52m 35.0s[1]

赤緯

–30° 05′ 16″[1]

視星等（V）

17.17

特性光谱分类
尚未確認，可能是 M0V
天体测定距离
4,920 ± 390 ly
(1,510 ± 120 pc)
詳細資料
質量
0.51 ± 0.04 M☉
溫度
~4,000 K



其他命名

EWS 2006-BUL-109

參考資料庫

SIMBAD


data

OGLE-2006-BLG-109L（字母 "L" 代表「透鏡」）是一顆位於銀河系核球區域內的暗淡恆星，視星等為17等，光譜類型可能是M0V，屬於紅矮星。它和地球距離4920光年，位於人馬座[1] 。




目录





  • 1 行星系


  • 2 參見


  • 3 參考資料


  • 4 外部連結




行星系


2008年天文學家以重力透鏡方式在OGLE-2006-BLG-109L旁發現兩顆太陽系外行星。這兩顆行星因為母恆星之間的距離，因此被認為其性質分別和木星與土星相當[2]




行星系統示意圖。


該行星系統中以發現的兩顆行星中，OGLE-2006-BLG-109Lb質量是木星的0.727倍，而OGLE-2006-BLG-109Lc的質量則大約是木星的0.271倍。兩者的質量比例、距離比例和表面平衡溫度相當於木星和土星，以及天牢三的行星系統[2]。


這兩顆行星是同時被偵測重力微透鏡的光學重力透鏡實驗、探索透鏡異常網、microFUN、天文物理重力微透鏡觀測和RoboNet一起發現，並於2008年2月14日公布。
























OGLE-2006-BLG-109L的行星系
成員
(依恆星距離)

質量

半長軸
(AU)

軌道週期
(天)

離心率

傾角

半徑

b
0.727 ± 0.06 MJ2.3 ± 0.5
1790 ± 548
?
?
?

c
0.271 ± 0.022 MJ4.5 ± 1
4931 ± 1750
0.15 ± 0.1
?
?


參見



  • 光學重力透鏡實驗，OGLE

  • OGLE-2005-BLG-390L


參考資料




  1. ^ 1.01.11.2 SIMBAD query result: EWS 2006-BUL-109 -- Star. Centre de Données astronomiques de Strasbourg. [2009-04-30]. 


  2. ^ 2.02.1 Gaudi, B. S.; 等. Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing. Science. 2008, 319 (5865): 927–930. Bibcode:2008Sci...319..927G. PMID 18276883. arXiv:0802.1920. doi:10.1126/science.1151947. 



外部連結



  • Britt, Robert Roy. Solar System Like Ours Found. Space.com. 2008-02-14 [2008-06-27]. 


  • Discovery of a Jupiter/Saturn Analog in OGLE-2006-BLG-109. MicroFUN. [2008-06-27]. 


  • Dominik, Martin. The unlonely planets — Discovery of a Jupiter/Saturn analogue. ARTEMiS. 2006-02-11 [2008-06-27]. 


  • Overbye, Dennis. Scientists Find Solar System Like Ours. The New York Times. 2008-02-14 [2008-06-27]. 


  • Rincon, Paul. Solar System's 'look-alike' found. BBC News. 2008-04-06 [2008-06-27]. 


  • OGLE-06-109L. Exoplanets. [2009-04-30]. 

天球赤道座標：星图17h 52m 35s，−30°05′16″







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