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The comet passed about 0.335 AU (50.1 million km; 31.1 million mi) from the Earth on 5 May 1861 and last came to perihelion (closest approach to the Sun) on 3 June 1861. [3] C/1861 G1 is listed as a long-period "non-periodic comet" because it has not yet been observed at two perihelion passages.
In comet nomenclature, the letter before the "/" is either "C" (a non-periodic comet), "P" (a periodic comet), "D" (a comet that has been lost or has disintegrated), "X" (a comet for which no reliable orbit could be calculated —usually historical comets), "I" for an interstellar object, or "A" for an object that was either mistakenly ...
The Great Comet of 1861, formally designated C/1861 J1 and 1861 II, is a long-period comet that was visible to the naked eye for approximately 3 months. [6] It was categorized as a great comet —one of the eight greatest comets of the 19th century.
The comet was discovered on May 1, 1846, by Theodor Brorsen. He described it as a large round nebulosity without tail. An independent discovery was done later the same day by Moritz Ludwig George Wichmann. The comet upon discovery was near the border of the constellations Pegasus and Vulpecula. The comet approached Earth at a distance of 0.302 ...
The comet faded rapidly and it was difficult to measure with the 36-inch telescope of Lick Observatory on 7 May. [6] The comet was found to have a similar orbit to comet C/1742 C1, [7] however comet Grigg–Mellish is intrinsically fainter than that comet. The comet's orbit passes very close to Earth, at a distance of 0.003 AU (0.45 million km ...
Comet Donati–van Arsdale, formally designated as C/1857 V1, is a parabolic comet co-discovered by Giovanni Battista Donati and Robert van Arsdale a few hours apart on 10 November 1857. [ 4 ] [ 5 ] It was calculated to have a retrograde trajectory around the Sun. [ 1 ] [ 6 ]
1 non-periodic comet. 2 comments. Toggle the table of contents. Talk: C/1861 G1 (Thatcher) Add languages. Page contents not supported in other languages. Article; Talk;
It was noted by Francois Colas (Paris observatory) [5] and Ichiro Hasegawa [6] that the path of McNaught–Russell coincided with that of comet C/574 G1, which was recorded in AD 574 over a period from April 4 to May 23 by observers in China. This would give the comet a period of 1430 ± 30 years and so making it the longest period comet to be ...