親子觀星會

C/2020 F8 (SWAN) 5/13接近地球

==
2020 f8
http://www.aerith.net/comet/catalog/2020F8/2020F8.html

(http://www.aerith.net/comet/catalog/2020F8/mag.gif)


https://www.facebook.com/search/top/?q=comet%20watch&epa=SEARCH_BOX

(https://www.facebook.com/photo.php?fbid=2845023512241538&set=gm.1116524218518039&type=3&eid=ARBqHoHMhtMxYpY5rn9ryne-AZAw_eRKFnSEdT_suMMZoowt8xRBz7IOZcove-vO7ePYNtiFP2rHq2xj)

https://www.facebook.com/photo.php?fbid=1443187932509118&set=a.104736449687613&type=3&theater&ifg=1


https://www.facebook.com/photo.php?fbid=1608408402644190&set=gm.1116558791847915&type=3&theater&ifg=1

(https://scontent.ftpe8-2.fna.fbcdn.net/v/t1.0-9/92587117_1608408409310856_800430673880940544_o.jpg?_nc_cat=100&_nc_sid=ca434c&_nc_ohc=GDELR8vDQ-MAX-PV7KD&_nc_ht=scontent.ftpe8-2.fna&oh=5771a796b992235480f58a7658ced3f2&oe=5EB7C5F5)

https://www.cloudynights.com/topic/702157-c2020-f8-swan/

stellarium  online search
   http://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=13443.new#new
(http://familystar.org.tw/forum/index.php?action=dlattach;topic=13443.0;attach=93342;image)

角度不高

不好拍吧 

台灣觀測摘要：

1. 天文曙光前已升上地平面：4/27-5/23，仰角最高5.4度為5/12。
2. 天文暮光後仍在地平面上：5/28-6/6，仰角最高1.3度為5/31與6/1。
3. 近日點5/27。
4. 5/13天亮前接近M74，可用300mm以內焦段拍下。
5. 5/15天亮前接近M33，可用180mm以內焦段拍下。
6. 5/20天亮前接近M34，可用180mm以內焦段拍下。
7. 5/21天亮前與大陵五距離大約0.5度。
8. 6/2天黑後與五車二距離大約1.2度。

大不易... 尤其是拍黃昏的...

https://l.facebook.com/l.php?u=https%3A%2F%2Fwww.space.com%2Fspacex-crew-dragon-nasa-astronauts-demo-2-launch-date.html%3Ffbclid%3DIwAR0VlYiK0m0boMtjCmGv-qhNnYhWfKVvDRKUJ_3AKRRZdt7fLhYisEZYW4A&h=AT1f1JPWUDUpVRMPpLN9_gbZkLR-4XSk-DBsuqrmE2k-BSicEIpI3Vy20hCrETI3QgUWICCc95kuBCZGm8Peh5a6vQCJoTiqI5flNsbjb52EYvFJ5CHiV0B1hxM0lil-S6Uu-Q

https://www.facebook.com/cometografia/photos/a.1587090988245246/2604945513126450/?type=3&theater

(https://scontent.ftpe8-3.fna.fbcdn.net/v/t1.0-9/s960x960/93954905_2604945519793116_268313925605392384_o.png?_nc_cat=106&_nc_sid=8024bb&_nc_ohc=MKPBdszRzmIAX8FBVfI&_nc_ht=scontent.ftpe8-3.fna&oh=d4b955a7a9410d2b73bb97538f66c5fb&oe=5ECA336E)

https://groups.io/g/comets-ml/topic/comet_c_2020_f8_swan/73251907?p=,,,20,0,0,0::recentpostdate/sticky,,,20,2,0,73251907&fbclid=IwAR3XSG22D29JK59bAzSKGwTJ9TPE4lOrxTn451QR5fbfeZXnC5ose2DN-88

https://www.facebook.com/AstronomyPictureOfTheDay/photos/a.149744531727683/2911450658890376/?type=3&theater

(https://scontent.ftpe7-2.fna.fbcdn.net/v/t1.0-9/95216933_2911450662223709_2291231955674464256_o.jpg?_nc_cat=1&_nc_sid=8024bb&_nc_ohc=KeA2CPYW6h8AX_yIqsM&_nc_ht=scontent.ftpe7-2.fna&oh=568eae5a12db438951e4cd0a084a5841&oe=5ECF6F47)

https://scontent.ftpe8-4.fna.fbcdn.net/v/t1.0-9/s960x960/95435424_10156833078326688_5701959983298510848_o.png?_nc_cat=110&_nc_sid=8024bb&_nc_ohc=Ru-qfbit9xMAX8hmNRR&_nc_ht=scontent.ftpe8-4.fna&oh=c08145c5d5c48c64644c4bc3a171219b&oe=5ED04911

(https://scontent.ftpe8-4.fna.fbcdn.net/v/t1.0-9/s960x960/95435424_10156833078326688_5701959983298510848_o.png?_nc_cat=110&_nc_sid=8024bb&_nc_ohc=Ru-qfbit9xMAX8hmNRR&_nc_ht=scontent.ftpe8-4.fna&oh=c08145c5d5c48c64644c4bc3a171219b&oe=5ED04911)

http://www.tam.museum/astronomy/astronomy_detail.php?lang=tw&id=894&fbclid=IwAR2NTeXz_5s2T1uLYNxjAKXwyZzAkc7fNi6eludrBV5UyNWRwovj5KYeAeY

目前的視星等約5.5，在人眼觀測極限內（＜6.5）。C/2020 F8是由「太陽和太陽圈探測器（SOHO）」上的「太陽風各向異性（Solar Wind ANisotropies，簡稱 SWAN）」望遠鏡所發現，因此以SWAN為彗星命名，初發現時亮度約8等，預計在5月底時可以接近3.5等。

(https://www.tam.museum/astronomy/htmlFiles/images/lightcurve.png)

(https://www.tam.museum/astronomy/htmlFiles/images/Gerald-Rhemann-Untitled2_1588187316_lg.gif)

蚤不到…蚤不到……

角度不高 ..北半球可能很難拍到

https://www.duluthnewstribune.com/news/science-and-nature/6465446-Astro-Bob-Bright-comet-SWAN-will-soon-grace-May-mornings

(https://www.duluthnewstribune.com/incoming/6465472-dj5uf1-SWAN-comet-path-May-6-to-18.jpg/alternates/BASE_FREE/SWAN-comet-path-May-6-to-18.jpg)

C/2020 F8 (SWAN)  也要裂了嗎?

https://www.facebook.com/photo.php?fbid=2565199007130164&set=gm.1134162416754219&type=3&theater&ifg=1

https://cometobservationsdatabase.wordpress.com/non-periodic-unnumbered/c-2020-f8-swan/

https://cometobservationsdatabase.wordpress.com/non-periodic-unnumbered/c-2020-f8-swan/

https://www.facebook.com/photo.php?fbid=10157993770647931&set=p.10157993770647931&type=3&theater

 (https://scontent.ftpe7-3.fna.fbcdn.net/v/t1.0-9/s960x960/96239752_10157993770657931_1934006537685041152_o.jpg?_nc_cat=108&_nc_sid=1480c5&_nc_ohc=HCf8hwzi88EAX9Kvp2e&_nc_ht=scontent.ftpe7-3.fna&_nc_tp=7&oh=60b07262bd4acefb5431dc61ab05c940&oe=5ED7AA94)

https://www.facebook.com/photo.php?fbid=1478777252301968&set=gm.1136407549863039&type=3&theater
(https://scontent.ftpe7-3.fna.fbcdn.net/v/t1.0-9/96244471_1478777255635301_6371656465484087296_n.jpg?_nc_cat=102&_nc_sid=ca434c&_nc_ohc=o-d0CNG8MbkAX-T89VJ&_nc_ht=scontent.ftpe7-3.fna&oh=7ed2225433b75cdfae0ba9be07f4b40a&oe=5ED96244)

http://fg-kometen.vdsastro.de/koj_2020/c2020f8/20f8eaus.htm

(http://fg-kometen.vdsastro.de/koj_2020/c2020f8/sele20f8.gif)

http://www.tam.museum/astronomy/forecast_detail.php?lang=tw&id=429

目前SWAN彗星位在鯨魚座的尾巴，日出前出現在東方低空附近，隨著越來越接近太陽，預測將快速地向雙魚座方向前進。根據目前觀測SWAN彗星亮度為7.0等，並將在5月13日最接近地球、5月26日通過近日點，最大亮度有機會達到3.5等。不過SWAN彗星是否會如同ATLAS般分裂，就要持續觀察了

超小顆的啊...  遠不如NEOWISE