c/2025 r2 SWAN25B 彗星分裂

[peter]

 c/2025 r2 分裂了

 
10/15 路過m9
10/17 m23
10 /17~18 路過 m16 m17

https://astro.vanbuitenen.nl/comet/2025R2

==

 c/2025 r2   https://astro.vanbuitenen.nl/comet/2025R2?fbclid=IwY2xjawM1xBRleHRuA2FlbQIxMABicmlkETF3anV1bG1DSTJEWmpRazB6AR43MFPQ9BYmx0BeQeokfbqVzULeci5ygIScUXtDmHAYHblZ3dsCHbhdAwR53A_aem_inXPq8vcwINjN__5_lg9ew


9/12 被發現後 過近日 點  .  10/19 近地點

http://www.aerith.net/comet/catalog/2025R2/2025R2-j.html


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RA DEC
https://neoexchange.lco.global/target/156360/measurements/


==
==
https://cometary.org/@qicheng/statuses/01K5563MB9NGR4366PD65C2S2N

_---------

Orbital elements: SWAN25B
Perihelion 2025 Sep 12.842615 +/- 0.13 TT; Constraint: e=1.0
Epoch 2025 Sep 12.0 TT = JDT 2460930.5 Earth MOID: 0.0477 Ju: 0.0368
q 0.503856065 +/- 0.000327 Ve: 0.0576 Me: 0.0468 Ma: 0.0798
H 7.1 G 0.15 Peri. 308.374927 +/- 0.55 Find_Orb
Node 335.505302 +/- 0.48
e 1.0 +/- 0 Incl. 4.468717 +/- 0.025
From 13 observations 2025 Sept. 9-12; mean residual 5".43

Incl= 軌道傾角
e 離心率
q =近日點距離

軌道6 要素
q   (perihelion distance近日點距離)  AU
e   (eccentricity偏心率) =  
i   (inclination軌道斜角) =  
q   (perihelion distance近日點距離) =  
TP  (time of perihelion passage過近日點時刻) =  
OMEGA   (longitude of ascending node 升交點黃經) =  
小寫omega    (argument of perihelion近日點幅角) =  


==
https://zh.wikipedia.org/wiki/SWAN25B

SWAN25B是指一顆於2025年9月11日由弗拉基米爾·貝祖格利（Vladimir Bezugly）透過SWAN影像發現的非週期彗星之臨時編號。截至2025年9月14日，該彗星目前視星等約為6.9等，太陽距角為30度，可透過50毫米雙筒望遠鏡在角宿一附近觀測[1]。此彗星可能正處於爆發階段，其暗淡速度或是否會完全解體尚屬未知。


==
 SWAN25B  彗星目前仍在待確認名單中  ，但是已經有明顯彗髮及長 2.8° （！？）的彗尾，亮度 7.4 等（！？）。不意外地，將直接躋身全天最亮彗星。

RA 13h08.7  dec -09d22這裏

另一個  13h12m 9.28s   DEC -9d 47m 22s

https://www.facebook.com/photo.php?fbid=10230383580437883&set=p.10230383580437883&type=3



https://www.facebook.com/photo/?fbid=24509244532068289&set=pcb.24602210996075732
 

https://www.facebook.com/groups/227002358661288/posts/1562230281805149/


The comet was discovered by Vladimir Bezugly on SWAN instrument images.


https://www.facebook.com/photo/?fbid=10229148912203528&set=gm.1562230281805149&idorvanity=227002358661288
 
 https://theskylive.com/c2025r2-info

https://www.facebook.com/photo?fbid=1086937126758893&set=a.115542097231739

[peter]

https://www.facebook.com/photo/?fbid=24987808480826086&set=a.150873661612912

[peter]

https://www.facebook.com/photo.php?fbid=10237167142414739&set=p.10237167142414739&type=3

[peter]

https://www.facebook.com/photo.php?fbid=2582752018732439&set=p.2582752018732439&type=3

[peter]

https://earthsky.org/space/new-comet-swan25b-2025/

[peter]

https://watchers.news/2025/09/12/comet-swan25b-surprises-astronomers-after-perihelion-outburst/

[peter]

SWAN25B彗星目前位置正在室女座，往日落後的西方天空看去大約位在火星與角宿一的右下方。接著SWAN25B彗星會往天秤座方向移動，並預計在10月初抵達，日落後的彗星位置仰角也會越來越高。有觀測者宣稱在10月初彗星將以0.25AU的距離通過地球旁邊，屆時可能會引發流星雨出

https://tam.gov.taipei/News_Content.aspx?n=EF86D8AF23B9A85B&sms=F32C4FF0AC5C2801&s=123D8C69F6E42512

[peter]

 evening of 13th Sept....
RA 13 13 01.7  DEC -09 45 35 mag ~8 Temp name is SWAN25B

Please note: The comet is TOO FAINT to see without telescope or binoculars.

[peter]

https://www.cloudynights.com/topic/975964-new-bright-swan-comet/

[peter]

今天許多彗星影像證實了彗髮形狀變成了三角形（遠離彗尾一側寬、靠近彗尾一側收束），這種「三角頭、鐵錘頭」是過去許多彗星彗核分裂的前兆


https://www.facebook.com/photo?fbid=24460784956905415&set=pcb.1563606188334225

[peter]

https://www.facebook.com/photo/?fbid=1088368513282421&set=pcb.1088370679948871

[peter]

https://skyandtelescope.org/astronomy-news/new-comet-swan25-pops-out-from-behind-the-sun/

[peter]

https://www.facebook.com/photo?fbid=10230410329546594&set=gm.24621419684154863&idorvanity=244730338917137

[peter]

SWAN25B  彗星 亮度 到 6等

https://www.facebook.com/photo/?fbid=10233825900927489&set=a.1243967097579

[Andy4g]

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