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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.
The source of the meteor shower are particles of dust shed by the long-period Comet C/1861 G1 Thatcher. [1] The April Lyrids are the strongest annual shower of meteors from debris of a long-period comet, mainly because as far as other intermediate long-period comets go (200–10,000 years), this one has a relatively short orbital period of ...
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.
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;
On 30 July he estimated the comet's magnitude to be 4. By 7 August the comet had brightened to magnitude 2–3 and featured a tail 11.5° long. The comet approached Earth at a distance of 0.096 astronomical units (14,400,000 km; 8,900,000 mi) on 8 August 1864 and was at a solar elongation of 12°.
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 ...
Zdenek Sekanina and Rainer Kracht published a study in 2016 where they concluded that the Lick object is highly likely a fragment of the same parent body as the comet C/1847 C1 (Hind). [2] Their findings suggested that the Lick Object and C/1847 C1 splitted from a parent body sometime during their perihelion on the 7th millennium BC at a ...
Comet Donati–Toussaint, formally designated as C/1864 O1, is a non-periodic comet co-discovered by Italian astronomers, Giovanni Battista Donati and Carlo Toussaint in July 1864. Discovery and observations