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Comet is an American digital broadcast television network owned by the Sinclair Television Group subsidiary of the Sinclair Broadcast Group [ 2] that focuses on science fiction, supernatural, horror, adventure and fantasy programming. The network was originally launched on October 31, 2015 as a joint venture with Metro-Goldwyn-Mayer, with much ...
C/2021 A1 (Leonard) C/2021 A1 (Leonard) was a long period comet [ 4] that was discovered by G. J. Leonard at the Mount Lemmon Observatory on 3 January 2021 (a year before perihelion) when the comet was 5 AU (750 million km) from the Sun. [ 1] It had a retrograde orbit. The nucleus was about 1 km (0.6 mi) across.
C/2021 T4 (Lemmon) is an inbound long period comet discovered by the Mount Lemmon Observatory on 7 October 2021. This passage through the planetary region of the Solar System will reduce the orbital period from millions of years to thousands of years.
Dimensions. ~5 km (3 mi) [ 1] C/2020 F3 (NEOWISE) or Comet NEOWISE is a long period comet with a near-parabolic orbit discovered on March 27, 2020, by astronomers during the NEOWISE mission of the Wide-field Infrared Survey Explorer (WISE) space telescope. At that time, it was an 18th-magnitude object, located 2 AU (300 million km; 190 million ...
A zoomed-in image of Comet 2022 E3 (ZTF) captured on Jan. 23, 2023. (Michael Borland) Celestial sleuths at th Comet E3 to make closest approach to Earth tonight
62P/Tsuchinshan, also known as Tsuchinshan 1, is a periodic comet first discovered January 1, 1965 at the Purple Mountain Observatory in Nanking. [6] It last came to perihelion on 25 December 2023 at around apparent magnitude 8, [2] and was then 0.53 AU (79 million km) from Earth and 110 degrees from the Sun. [4]
List of periodic comets. Periodic comets (also known as short-period comets) are comets with orbital periods of less than 200 years or that have been observed during more than a single perihelion passage [ 1] (e.g. 153P/Ikeya–Zhang ). "Periodic comet" is also sometimes used to mean any comet with a periodic orbit, even if greater than 200 years.
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 ...