彗星 C/2022 E3 (ZTF)
peter:
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依據COBS的模擬資料 2月1日的亮度可達到5.4等
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1月7日更新：
依據COBS的模擬資料 2月1日的亮度可達到5.4等
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彗星2022 E3 北冕 約 3:30後起
在2023年的1月12日 近日 ， 2月1 到近地 ，亮度可能 5~6等 (一說最亮 4.7 )
https://theskylive.com/c2022e3-info
https://www.nasachina.cn/apod/23605.html
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ZTF0Nf7 彗星 C/2022 E3 (ZTF)
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ZTF0Nf7 could be interesting. Not so sure about that naked eye visibility yet though, but for now I'm getting a very promising mag. ~5.5 at closest approach (~0.34 AU from earth). Early brightness estimates could go both ways later on, though.
https://www.facebook.com/photo/?fbid=10216158409312791&set=pcb.1628785360625253
https://www.facebook.com/photo?fbid=10216158414272915&set=pcb.1628785360625253
naked-eye January 2023 comet.
MPEC F13: C/2022 E3 (ZTF) (=ZTF0Nf7), near-polar quasi-parabolic comet
62 obs. 2022-03-02 - 2022-03-21
q = 1.11 ± 0.01 au @ 2023-01-12 ± 2 days
e = 0.9992 ± 0.0073 ; i = 109.2 ± 0.3°
E-MOID = 0.22 au ; J-MOID = 1.73 au ; Saturn-MOID = 0.81 au
Current V = 17.1
It will be 0.28 ± 0.06 au away from the Earth on 2023-02-01 ± 3 days
peter:
https://twitter.com/skymorph/status/1505219933218689031
Seems like the @ztfsurvey
has found a nice comet for us Northerners for January 2023. ZTF0Nf7 looks like it will have its perigee around perihelion at convenient elongations. Magnitude very uncertain, maybe 6-8 mag? The comet has not yet been announced.
peter:
https://www.astroforum.nl/threads/c-2022-e3-ztf-interessante-komeet-in-het-voorjaar-van-2023.1472389/#post-1519614
https://www.facebook.com/sarm.ro/photos/pcb.1373539189830117/5215564635174742
peter:
https://www.dprenvip.com/circle/80930.html
https://remanzacco.blogspot.com/2022/03/new-comet-c2022-e3-ztf-may-reach-mag-6.html
peter:
https://remanzacco.blogspot.com/2022/03/new-comet-c2022-e3-ztf-may-reach-mag-6.html
https://www.hkas.org.hk/2022/03/22/%E7%BE%8E%E5%9C%8B%E8%8C%B2%E5%A8%81%E5%9F%BA%E7%9E%AC%E8%AE%8A%E8%A8%AD%E6%96%BD%E7%99%BC%E7%8F%BE%E6%96%B0%E5%BD%97%E6%98%9F/
這顆彗星會在明年1月13日（香港時間）7時18分過近日點，稍後在2月2日3時36分過近地點。屆時綜合光度可能到達5.5等。
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