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Comet Hale–Bopp (formally designated C/1995 O1) is a long-period comet that was one of the most widely observed of the 20th century and one of the brightest seen for many decades. [11] [12] [13] Alan Hale and Thomas Bopp discovered Comet Hale–Bopp separately on July 23, 1995, before it became visible to the naked eye.
On September 26 the comet made its closet approach to Earth at a distance of about 1.15 AU; for a great comet this distance is unusually large — only two other known great comets failed to come closer than 1 AU to Earth — namely, the Great Comet of 1811 and Comet Hale-Bopp. [6]
Thomas Joel Bopp (October 15, 1949 – January 5, 2018) was an American amateur astronomer. In 1995, he discovered comet Hale–Bopp; Alan Hale discovered it independently at almost the same time, and it was thus named after both of them. [1] At the time of the comet discovery he was a manager at a construction materials factory and an amateur ...
Periodic comets (also known as short-period comets) are comets with orbital periods of less than 200 years or that have been observed during more than a single perihelion passage [1] (e.g. 153P/Ikeya–Zhang). "Periodic comet" is also sometimes used to mean any comet with a periodic orbit, even if greater than 200 years.
He started astrophotography back in 1987 and within two years, comets were and still are his favorite objects, including one of the most beautiful and brightest ever seen, comet Hale-Bopp, in 1997 ...
Comet Hale–Bopp (formally designated C/1995 O1) was probably the most widely observed comet of the 20th century, and one of the brightest seen for many decades. It was visible to the naked eye for a record 18 months, twice as long as the previous record holder, the Great Comet of 1811 .
Applewhite told them the comet Hale-Bopp was being trailed by an alien spacecraft and, if they died, they could board it. 38 people committed suicide. 20 years after the Heaven's Gate mass suicide ...
The following list is of comets with very long orbital periods, defined as between 200 and 1000 years.These comets come from the Kuiper belt and scattered disk, beyond the orbit of Pluto, with possible origins in the Oort cloud for many.