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8P/Tuttle is a periodic comet with a 13.6-year orbit. It fits the classical definition of a Jupiter-family comet with an orbital period of less than 20 years, but does not fit the modern definition of. Its last perihelion passage was 27 August 2021 when it had a solar elongation of 26 degrees at approximately apparent magnitude 9. Two weeks later, on September 12, 2021, it was about 1.8 AU (270 million km) from Earth which is about as far from Earth as the comet can get when the comet is near perihelion.
28P/Neujmin, also known as Neujmin 1, is a large periodic comet in the Solar System. With a perihelion distance of 1.5AU, this comet does not make close approaches to the Earth.
52P/Harrington–Abell is a periodic comet in the Solar System.
60P/Tsuchinshan, also known as Tsuchinshan 2, is a periodic comet in the Solar System with an orbital period of 6.79 years. Tsuchinshan is the Wade-Giles transliteration corresponding to the pinyin Zǐjīn Shān 紫金山, which is Mandarin Chinese for "Purple Mountain".
73P/Schwassmann–Wachmann, also known as Schwassmann–Wachmann 3 or SW3 for short, is a periodic comet that has a 5.4 year orbital period and that has been actively disintegrating since 1995. When it came to perihelion in March 2017, fragment 73P-BT was separating from the main fragment 73P-C. Fragments 73P-BU and 73P-BV were detected in July 2022. The main comet came to perihelion on 25 August 2022, when the comet was 0.97 AU from the Sun and 1 AU from Earth. It will be less than 80 degrees from the Sun from 25 May 2022 until August 2023. On 3 April 2025 it will make a modest approach of 0.3 AU to Jupiter. 73P will next come to perihelion on 23 December 2027 when it will be 0.92 AU from the Sun and on the far side of the Sun 1.9 AU from Earth.
102P/Shoemaker, also known as Shoemaker 1, is a periodic comet in the Solar System. It was first seen in 1984 and then again in 1991. Images taken of it in 1999 were not recognized until 2006 when it was once again observed. It was unexpectedly dim in each of these returns.
120P/Mueller, also known as Mueller 1, is a periodic comet in the Solar System. It last came to perihelion in May 2021 and underwent a 1.4 magnitude outburst in August 2021,.
152P/Helin–Lawrence is a periodic comet in the Solar System.
157P/Tritton is a periodic comet with a 6-year orbital period. Fragment B was first observed on 21 August 2022.
158P/Kowal–LINEAR is a periodic comet in the Solar System that has an orbit out by Jupiter.
6P/d'Arrest is a periodic Jupiter-family comet in the Solar System, orbiting between Mars and Jupiter. It passed 0.15124 AU from the Earth on August 12, 1976. The most recent perihelion passage took place on September 17, 2021, when the comet had a solar elongation of 95 degrees at approximately apparent magnitude of 10.
7P/Pons–Winnecke is a periodic Jupiter-family comet with a six-year orbit. Early calculations for the 1921 apparition suggested that the orbit of the comet might collide with Earth in June, but observations on 10 April ruled out an impact. It made a very close approach to Earth in June 1927. The outward migration of perihelion created impressive meteor showers in 1916, 1921 and 1927.
Comet Finlay is a periodic comet with an orbital period of 6 years discovered by William Henry Finlay on September 26, 1886. The next perihelion passage is July 13, 2021 when the comet will have a solar elongation of 54 degrees at approximately apparent magnitude 10. It last came to perihelion on December 27, 2014, at around magnitude 10. Of the numbered periodic comets, the orbit of 15P/Finlay has one of the smallest minimum orbit intersection distances with the orbit of Earth (E-MOID). In October 2060 the comet will pass about 5 million km from Earth.
178P/Hug–Bell is a periodic comet in the Solar System. It was discovered by Northeast Kansas Amateur Astronomers' League members Gary Hug and Graham Bell and is thought to be the first periodic comet to be discovered by amateurs. It was declared a comet less than two days after its initial discovery, after having its course confirmed on previous images.
45P/Honda–Mrkos–Pajdušáková is a short-period comet discovered by Minoru Honda December 3, 1948. It is named after Minoru Honda, Antonín Mrkos, and Ľudmila Pajdušáková. The object revolves around the Sun on an elliptical orbit with a period of 5.25 years. The nucleus is 1.3 kilometers in diameter. On August 19 and 20, 2011, it became the fifteenth comet detected by ground radar telescope.
206P/Barnard–Boattini was the first comet to be discovered by photographic means. The American astronomer Edward Emerson Barnard did so on the night of October 13, 1892. After this apparition this comet was lost and was thus designated D/1892 T1. Ľuboš Neslušan suggests that 14P/Wolf and this comet are siblings which stem from a common parent comet.
62P/Tsuchinshan, also known as Tsuchinshan 1, is a periodic comet first discovered January 1, 1965 at the Purple Mountain Observatory in Nanking. It last came to perihelion on 25 December 2023 at around apparent magnitude 8, and was then 0.53 AU (79 million km) from Earth and 110 degrees from the Sun.
246P/NEAT is a periodic comet discovered on 2004 March 28 by Near-Earth Asteroid Tracking (NEAT) using the 1.2-metre (47 in) reflector at Haleakala. It was given the permanent number 246P on 2011 January 14.
51P/Harrington is a periodic comet in the Solar System.
72P/Denning–Fujikawa is a periodic comet discovered on 4 October 1881 by William Frederick Denning. The comet was not seen at another apparition until recovered by Shigehisa Fujikawa in 1978. From 29 December 1978 until 17 June 2014, the comet was lost. On 17 June 2014 the comet was recovered by Hidetaka Sato at apparent magnitude 16 when it was 50 degrees from the Sun. The comet came to perihelion in June 2023, and will next come to perihelion in May 2032.
References
- ↑ "MPEC 2006-T21: COMET C/2006 T1 (LEVY)". Minor Planet Electronic Circular. Minor Planet Center. 3 October 2006. Retrieved 21 November 2024.
- 1 2 3 "255P/Levy – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory . Retrieved 10 January 2016.
- ↑ "Horizons Batch for 255P/Levy on 2022-Sep-07" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons . Retrieved 2023-04-30. (JPL#40/Soln.date: 2021-Oct-18)
- ↑ "Horizons Batch for 255P/Levy on 2027-Sep-25" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons . Retrieved 2023-04-30. (JPL#40/Soln.date: 2021-Oct-18)
- 1 2 "P/2006 T1 (Levy)" (last observation: 2011-12-17). Minor Planet Center . Retrieved 2011-12-18.
- ↑ "P/2006 T1 Comet for Windows apmag graph for 2006". aerith.net. Retrieved 2011-04-07.
- ↑ "MPEC 2011-L51: OBSERVATIONS AND ORBITS OF COMETS". Minor Planet Electronic Circular. Minor Planet Center. 12 June 2011. Retrieved 13 June 2011.
- ↑ "MPEC 2011-Y07: P/2006 T1 = 2011 Y1 (Levy)". Minor Planet Electronic Circular. Minor Planet Center. 18 December 2011. Retrieved 19 December 2011.
- ↑ "JPL Close-Approach Data: P/2006 T1 (Levy)" (last observation: 2011-12-30; arc: 5.24 years). Retrieved 2012-01-04.
- ↑ "Weekly Information about Bright Comets (2011 Dec. 24: North)". aerith.net. 2011-12-27. Retrieved 2012-01-04.
- ↑ "CCD comet estimates". severastro.narod.ru. 2012-01-01. Archived from the original on 2012-04-22. Retrieved 2012-01-04.
- ↑ "255P/Levy Orbit". Minor Planet Center . Retrieved 2014-06-20.
- ↑ D. Šegon; P. Gural; Z. Andreić; I. Skokić; K. Korlević; et al. (April 2014). "New showers from parent body search across several video meteor databases". WGN, Journal of the International Meteor Organization. 42 (2): 57–64. Bibcode:2014JIMO...42...57S. ISSN 1016-3115.
