{{위키데이터 속성 추적}}
[[파일:C2022_E3_(ZTF)-_Alessandro_Bianconi.jpg|섬네일|2023년 1월 27일 모습]]
'''C/2022 E3'''(ZTF)는 2022년 3월 2일 ZTF(Zwicky Transient Facility)에서 발견된 [[오르트 구름]]의 비주기 혜성이다. 이 혜성은 햇빛의 영향으로 이원자 탄소와 [[사이아노젠]]에 대해 [[혜성의 핵|핵]] 주위에 밝은 녹색 빛을 낸다.<ref>{{웹 인용|last=Georgiou |first=Aristos |date=2023-01-10 |title=What makes the green comet green? |url=https://www.newsweek.com/green-comet-appear-february-night-sky-never-return-earth-1772429 |url-status=live |archive-url=https://web.archive.org/web/20230125114911/https://www.newsweek.com/green-comet-appear-february-night-sky-never-return-earth-1772429 |archive-date=2023-01-25 |access-date=2023-01-25 |website=[[Newsweek]] |language=en}}</ref>{{r|UT}} 혜성의 체계적 명칭은 C로 시작하여 주기혜성이 아님을 나타내며, '2022 E3'는 2022년 3월 상반기에 발견된 세 번째 혜성임을 의미한다.<ref name="UT">{{웹 인용|title=A rare green comet is becoming visible in northern skies. How to see it without a telescope. |url=https://www.usatoday.com/in-depth/graphics/2023/01/15/green-comet-what-it-is-how-to-see-it/11039033002/ |access-date=2023-02-02 |website=www.usatoday.com |date=15 January 2023 |language=en |archive-date=2 February 2023 |archive-url=https://web.archive.org/web/20230202113225/https://www.usatoday.com/in-depth/graphics/2023/01/15/green-comet-what-it-is-how-to-see-it/11039033002/ |url-status=live }}</ref>

혜성 핵의 크기는 약 1㎞<ref>{{웹 인용|date=2023-01-07 |title=Once in 50,000-year comet may be visible to the naked eye |url=https://www.france24.com/en/live-news/20230107-once-in-50-000-year-comet-may-be-visible-to-the-naked-eye |access-date=2023-02-02 |website=France 24 |language=en |archive-date=2 February 2023 |archive-url=https://web.archive.org/web/20230202164252/https://www.france24.com/en/live-news/20230107-once-in-50-000-year-comet-may-be-visible-to-the-naked-eye |url-status=live }}</ref>로 8.5<ref>{{웹 인용|title=ATel #15909: Rotation period and Morphological Structures in the inner coma of comet C/2022 E3 (ZTF) |url=https://www.astronomerstelegram.org/?read=15909 |website=The Astronomer's Telegram |access-date=22 February 2023}}</ref>~8.7시간마다 회전하는 것으로 추정됐다.<ref>{{웹 인용|title=ATel #15879: Rotation period of comet C/2022 E3 ZTF from CN morphology |url=https://www.astronomerstelegram.org/?read=15879 |website=The Astronomer's Telegram |date=30 January 2023 |access-date=2 February 2023 |archive-date=2 February 2023 |archive-url=https://web.archive.org/web/20230202122613/https://www.astronomerstelegram.org/?read=15879 |url-status=live }}</ref> 먼지와 가스의 [[혜성 꼬리|꼬리]]는 수백 만 킬로미터에 걸쳐 뻗어 있었고, 2023년 1월에는 [[반꼬리]]도 보였다.<ref>{{뉴스 인용|date=2023-02-01 |title=Understanding the Tails of Comet ZTF (C/2022 E3) |url=https://skyandtelescope.org/astronomy-news/understanding-the-tails-of-comet-ztf-c-2022-e3/ |access-date=2023-02-02 |website=Sky & Telescope |language=en-US |archive-date=2 February 2023 |archive-url=https://web.archive.org/web/20230202122609/https://skyandtelescope.org/astronomy-news/understanding-the-tails-of-comet-ztf-c-2022-e3/ |url-status=live }}</ref>

혜성은 2023년 1월 12일 1.11 AU(1억 6600만km, 1억 300만 마일) 거리에서 근일점에 도달했으며, 지구에 가장 가까운 접근은 2023년 2월 1일 0.28AU(4,200만km) 거리에서 이루어졌다. 혜성은 등급 5에 도달했고 달이 없는 [[밤하늘 보호구역|어두운 하늘]] 아래에서 육안으로 볼 수 있었다.<ref name="COBS">{{웹 인용|title=COBS: Comet C/2022 E3 (ZTF) observation list |url=https://cobs.si/cobs/comet/obs/2323/ |access-date=31 January 2023 |archive-url=https://archive.today/20230201003929/https://cobs.si/cobs/comet/obs/2323/ |archive-date=1 February 2023 |url-status=live}}</ref><ref name="S&T20230116">{{웹 인용
  |title=Circumpolar Comet ZTF (C/2022 E3) is Here!
  |publisher=[[Sky & Telescope]]
  |date=2023-01-16
  |url=https://skyandtelescope.org/astronomy-news/spot-circumpolar-comet-ztf-c-2022-e3-in-binoculars/
  |access-date=2023-01-17
  |archive-date=17 January 2023
  |archive-url=https://web.archive.org/web/20230117092034/https://skyandtelescope.org/astronomy-news/spot-circumpolar-comet-ztf-c-2022-e3-in-binoculars/
  |url-status=live
  }}</ref><ref name="NYT-20230120">{{뉴스 인용|last=Hall |first=Shannon |title=How to Watch the 'Green Comet' in Night Skies. - Comment |url=https://www.nytimes.com/article/green-comet-watch.html#permid=122707240 |date=20 January 2023 |work=[[The New York Times]] |url-status=live |archiveurl=https://archive.today/20230124131700/https://www.nytimes.com/article/green-comet-watch.html%23permid=122707240  |archivedate=24 January 2023 |accessdate=21 January 2023 }}</ref><ref>{{웹 인용|last1=Mack |first1=Eric |date=2023-01-23 |title=Bright Green Comet Passing Earth Is Visible Now in Dark Skies |url=https://www.cnet.com/science/space/bright-green-comet-passing-earth-is-visible-now-in-dark-skies/ |url-status=live |archive-url=https://web.archive.org/web/20230123224309/https://www.cnet.com/science/space/bright-green-comet-passing-earth-is-visible-now-in-dark-skies/ |archive-date=2023-01-23 |access-date=2023-01-24 |website=[[CNET]] |language=en}}</ref>

== 각주 ==
<references />

== 외부 링크 ==
* {{JPL small body|id=1003845}}

{{전거 통제}}

[[분류:2022년 발견한 천체]]
[[분류:비주기 혜성]]
[[분류:쌍곡선 궤도 혜성]]