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Comet White–Ortiz–Bolelli : ウィキペディア英語版 | Comet White–Ortiz–Bolelli
Comet White–Ortiz–Bolelli (formal designations: C/1970 K1, 1970 VI, and 1970f) was a bright comet which appeared in 1970. It was a member of the Kreutz Sungrazers, a family of comets which resulted from the break-up of a large parent comet several centuries ago. It was already easily visible to the naked eye when first discovered, and reached a maximum apparent magnitude of +1. == Discovery == Comet White–Ortiz–Bolelli was first spotted on May 18 by Graeme White, an Australian amateur astronomer in Wollongong, New South Wales. He sighted the comet in binoculars shortly after sunset, and described it as having a star-like head at apparent magnitude 1-2, and a short tail about 1 degree long. He spotted it again on May 20 by naked eye as well as binoculars, and by this time the tail had grown to 10° in length. The second independent discovery was made on May 21 by Air France pilot Emilio Ortiz, from a location about 400 km east of Madagascar. Ortiz saw the comet from his cockpit, and reported a magnitude of 0.5 to 1.0 and a tail about 5–8° long. A few hours later, Carlos Bolelli, a technician at the Cerro Tololo Inter-American Observatory in Chile became the third independent discoverer of the comet, although he saw only the tail, as the head was beneath the horizon.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Comet White–Ortiz–Bolelli」の詳細全文を読む
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