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This is a list of comets (bodies that travel in elliptical, parabolic, and sometimes hyperbolic orbits and display a tail behind them) listed by type. Comets are sorted into four categories: periodic comets (e.g. Halley's Comet), non-periodic comets (e.g. Comet Hale–Bopp), comets with no meaningful orbit (the Great Comet of 1106), and lost comets (), displayed as either P (periodic), C (non ...
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Periodic comets usually have elongated elliptical orbits, and usually return to the vicinity of the Sun after a number of decades. The official names of non-periodic comets begin with a "C"; the names of periodic comets begin with "P" or a number followed by "P". Comets that have been lost or disappeared have names with a "D". Comets whose ...
C/ indicates a non-periodic comet i.e. any comet that is not periodic according to the preceding definition. X/ indicates a comet for which no reliable orbit could be calculated (generally, historical comets). D/ indicates a periodic comet that has disappeared, broken up, or been lost. [5]
C/1988 A1 (Liller) is a non-periodic comet discovered on 11 January 1988 by William Liller. [1] The comet is part of a family of comets, known as the Liller family, which also includes the comets C/1996 Q1 (Tabur) , C/2015 F3 (SWAN) , C/2019 Y1 (ATLAS) , and C/2023 V5 (Leonard) .
C/2024 G3 (ATLAS) is a non-periodic comet, which reached perihelion on 13 January 2025, at a distance of 0.09 AU (13 million km) from the Sun. It is potentially the brightest comet of 2025, [6] with an apparent magnitude reaching −3.8 on the day of its perihelion. [5] The comet is visible in the southern hemisphere before and after perihelion.
Comet Tago–Sato–Kosaka, formally designated as C/1969 T1, is a non-periodic comet that became visible in the naked eye between late 1969 and early 1970. [5] It was the first comet ever observed by an artificial satellite.
The Great Comet of 1577 is a well-known example of a great comet. It passed near Earth as a non-periodic comet and was seen by many, including well-known astronomers Tycho Brahe and Taqi ad-Din. Observations of this comet led to several significant findings regarding cometary science, especially for Brahe.