Posts

Showing posts from March 11, 2019

EBLM J0555-57 目录 恆星系統 EBLM...

Image
2MASS天体BD、CD和CP天体三星系統食雙星绘架座F-型主序星 繪架座F8恆星食凌星軌道離心率軌道傾角半長軸木星質量太陽質量土星劍橋大學超廣角尋找行星都卜勒光譜學 EBLM J0555-57 觀測資料 曆元 J2000 星座 繪架座 星官 赤經 05 h  55 m  32.6868 s [1] 赤緯 -57° 17′ 26.064″ [1] 視星等 (V) 9.98 / 10.76 [2] 特性 光谱分类 F8 [3] 变星类型 食雙星 [2] 天体测定 徑向速度 (R v ) 23.419 ± 0.74 [4] km/s 自行 (μ) 赤经:3.858 [1] mas/yr 赤纬:-39.713 [1] mas/yr 视差 (π) 5.16 ± 0.36 [1] mas 距离 630 ± 40 ly (190 ± 10 pc) 位置(相對於A) 组成恒星 B 觀測曆元 1998 角距離 2.50″ [3] 位置角 254° [3] 观测到的相距 (估计) 479 AU [2] 軌道 [2] 主星 Aa 伴星 Ab 绕行周期 (P) 7.757 6 76 +0.000 0 29 −0.000 0 25 d 半长轴 (a) 0.0817 ± 0.0019 au 偏心率 (e) 0.0894 +0.0035 −0.0036 倾斜角 (i) 89.84 +0.2 −1.8 ° 近心点幅角 (ω) (secondary) −53.7 +1.5 −1.8 ° 詳細資料 [2] EBLM J0555-57A 質量 1.13 ± 0.08 M ☉ 半徑 0.99 +0.15 −0.03 R ☉ 表面重力 (log g ) 4.18 ± 0.21 溫度 6461 ± 124 K 金属量 [Fe/H] −0.24 ± 0.16 dex 自轉速度 ( v sin i ) 7.60 ± 0.28 km/s EBLM ...

Of what use is Arcane Recovery to an Elf Wizard?Is 4 hours long enough for a long rest for Elves and...

Image
Why does liquid water form when we exhale on a mirror? Did Carol Danvers really receive a Kree blood tranfusion? Is it "Vierergruppe" or "Viergruppe", or is there a distinction? In the late 1940’s to early 1950’s what technology was available that could melt a LOT of ice? Virginia employer terminated employee and wants signing bonus returned When traveling to Europe from North America, do I need to purchase a different power strip? How strictly should I take "Candidates must be local"? Why the color red for the Republican Party Does "variables should live in the smallest scope as possible" include the case "variables should not...
hsZp19YlFyl0YsVS XPqOMU5wkiuPC j,m7 FH HZvzY,a