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2011年8月5日星期五

Elenin:彗差直徑200,000+公里:地球在赤道的直徑? 12,756.32公里

Elenin:彗差直徑200,000+KM:地球在赤道的直徑? 12,756.32 KM
Elenin: 200,000+ KM Coma Diameter: Earth's Diameter at Equator? 12,756.32 KM
2011年8月4日 上午 07:54:02
Translation by Autumnson Blog

Diameter of coma of comet Elenin exceeded 200,000 km
彗星Elenin的彗差直徑超過200,000公里
What is the diameter of the earth?

The diameter of the earth at the equator is 7,926.41 miles (12,756.32 kilometers).
地球在赤道的直徑是7,926.41英里(12,756.32公里)。

From: geography.about.com/library/faq/blqzdiameter.htm

A few hours ago I got the first original comet images in FITS format, taken on August 1 (many thanks to Karl Battams, STEREO team member). Several frames were damaged, but the team believes that they will solve this problem at the next session. I stacked all images by the comet movement, this has increase the singnal/noise ratio, see the comet with more “details”.

So, the first results. The comet has grown. Now the diameter of it’s outer coma exceeded 200,000 km! Of course, at this time we have only low resolution images, but they still allow us to estimate its current size. I want to remind you that the outer coma, it’s very discharged gas envelope, not the nucleus itself, estimates of the nucleus size has not changed. On the picture below you can see the comet itself, as well as the angular size of the Sun, if it was located at the same distance as comet. Impressive?
所以,第一手結果。該彗星已增長,它的外彗差直徑現在突破20萬公里!當然,在這時候我們只有低解像度的圖像,但它們仍然可讓我們去估計它目前的大小。我想提醒你,外彗差是非常排出的氣體殼層,而不是核心本身,核大小的估計並沒有改變。在下面的圖片上,你可看到彗星本身,以及太陽的角面積,如果它是位於彗星的同一距離。印象深刻?

http://beforeitsnews.com/story/903/024/Elenin:_200,000_KM_Coma_Diameter:_Earths_Diameter_at_Equator_12,756.32_KM.html

NASA 後立體聲的彗星Elenin影像 及木星土星所受影响

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