C/2019 E3 (ATLAS): Difference between revisions

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{{Infobox comet

| name = C/2019 E3 (ATLAS)

| discovery_ref = {{r|CBET_4615|MPEC_2019-F54}}

| discoverer = D. Young

| discovery_site = [[Asteroid Terrestrial-impact Last Alert System|ATLAS]]–[[Mauna Loa Observatory|MLO]] ([[List of observatory codes|T08]])

| discovery_date = 5 March 2019

| designations = CK19E030<br>A10ckQ4{{r|baa-2019}}

| orbit_ref = {{r|jpl}}

| epoch = 17 May 2022 ([[Julian day|JD]] 2459716.5)

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| perihelion = 10.314 AU

| aphelion =

| semimajor = {{small|Barycentric:}}<br>~32,600 AU

| period =

| eccentricity = 1.00154

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}}

'''Comet ATLAS''', formally designated as '''C/2019 E3''', is an [[Oort cloud]] [[comet]] with a very distant perihelion of {{convert|10.30|AU|e9km|abbr=unit}}, the third known comet with a perihelion distance beyond 10 AU after [[167P/CINEOS]] and [[C/2003 A2 (Gleason)]].{{r|jpl|Fernandez_2019}}

Precovery observations of this comet all the way to 2016 (and later 2012){{r|jpl}} have revealed that the comet had produced some cometary activity more than {{convert|20|AU|e9km|abbr=unit}} from the [[Sun]], making it the fourth known distant comet to produce such activity at large distances after [[C/2010 U3 (Boattini)]], [[C/2014 UN271 (Bernardinelli–Bernstein)]], and [[C/2017 K2 (PanSTARRS)]].{{r|Hui_2024}}

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== References ==

{{Reflist|refs=

<ref name="baa-2019">{{cite web

| author1= J. Shanklin

| title= BAA Comet Section: Comets in 2019

| url= https://people.ast.cam.ac.uk/~jds/coms19.htm#19E3

| publisher= University of Cambridge

| date= 2 March 2024

| access-date= 1 February 2025 }}

</ref>

<ref name="CBET_4615">{{cite journal

| author1= D. W. Green

| title= Comet C/2019 E3 (ATLAS)

| url= http://www.cbat.eps.harvard.edu/iau/cbet/004600/CBET004615.txt

| journal= Central Bureau for Astronomical Telegrams

| volume= 4615

| date= 21 March 2019 }}

</ref>

<ref name="Fernandez_2019">{{cite web

| author1= Y. R. Fernandez

| title= List of Jupiter-Family and Halley-Family Comets

| url= https://www.physics.ucf.edu/~yfernandez/cometlist.html#hp

| access-date= 1 June 2019 }}

</ref>

<ref name="Hui_2024">{{cite journal

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| bibcode= 2024AJ....167..140H

| doi= 10.3847/1538-3881/ad2500

| doi-access= free }}| arxiv= 2401.04414

}}

</ref>

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| url= https://minorplanetcenter.net//mpec/K19/K19F54.html

| website= www.minorplanetcenter.net

| publisher= [[Minor Planet Center]]

| date= 21 March 2019

| access-date= 31 May 2019 }}

</ref>