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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 ...
C/1861 G1 (Thatcher) (source of the April Lyrids) is expected to come to perihelion. [64] 2284 Perihelion of Comet Halley. [65] Previous perihelion passages were in 1986, 2061, 2134, and 2209. 2287 C/1979 Y1 (Bradfield) (suspected source of the July Pegasids) is expected to come to perihelion. [66] 2287 August 28
It was not visible in the northern hemisphere until June 29, but it arrived before word of the comet's discovery. On June 29, 1861, Comet C/1861 J1 passed 11.5 degrees (23 Sun-widths) from the Sun. [7] On the following day, June 30, 1861, the comet made its closest approach to the Earth at a distance of 0.1326 AU (19,840,000 km; 12,330,000 mi). [1]
This category contains near-Earth comets.In general, numbered objects in this category should be sorted using a sortkey based on their numerical prefix (0-padded-three-digits plus single letter, see order in List of numbered comets), for example:
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 ...
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;
Temple estimated its magnitude to be 4–5. Schmidt observed the comet again on July 4 and noted a tail half a degree long. [2] The comet passed at a distance of 0.0982 astronomical units (14,690,000 km; 9,130,000 mi) from Earth on 4 July, making it the fourth closest known approach of a comet to Earth in the 19th century. [3]