親子觀星會

==
C/2015 ER61 ( PanSTARRS )  分裂 ??
==

C/2015 ER61 ( PanSTARRS )  可能變亮
==
full list
http://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=24999.0

===

C/2015 ER61 ( PanSTARRS )

http://www.aerith.net/comet/catalog/2015ER61/2015ER61.html


(http://www.aerith.net/comet/catalog/2015ER61/mag.gif)

FROM

http://blog.astronomypage.ru/


(http://blog.astronomypage.ru/wp-content/uploads/2017/03/2015ER61-k-17-3103-1104.jpg)


5/1 靠海王星

0415 

http://spaceweathergallery.com/comet_gallery.html

C/2015 ER61 ( PanSTARRS )  可能變亮

https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/26468

還不確定真假

C/2015 ER61 (PANSTARRS):
2017 Apr. 4.17 UT: m1=7.4, Dia.=4', DC=6, 10x50B.
[ Possible outburst. The comet shows a higher DC,

C/2015 V2 (Johnson ):
2017 Apr. 4.12 UT: m1=9.4, Dia.=4', DC=4,

C/2017 E1 (Borisov):
2017 Apr. 4.19 UT: m1=8.5, Dia.=5', DC=2, 20 cm SCT (100x).

C/2017 E4 (Lovejoy):
2017 Apr. 4.16 UT: m1=6.9, Dia.=4', DC=7, 10x50B.

41P/Tuttle-Giacobini-Kresak:
2017 Apr. 4.10 UT: m1=6.4, Dia.=25', DC=3, 12x45 monocular.

https://www.facebook.com/photo.php?fbid=1451780808226053&set=p.1451780808226053&type=3&theater

(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17522887_1451780808226053_3220000005306886565_n.jpg?oh=0978ff5fbd17d7426668e5441dd3dcb1&oe=594F1B75)
FB 

Jack Tsai    昆陽拍 4/3拍的C/2015 ER61

http://spaceweathergallery.com/indiv_upload.php?upload_id=134619&PHPSESSID=hiqq4ru55f6qhv4c7ul1tu5ut0

 Comet C/2015ER61 Panstarrs
Taken by Gerald Rhemann on April 5, 2017 @ Farm Tivoli, Namibia, SW-Africa

(http://0e33611cb8e6da737d5c-e13b5a910e105e07f9070866adaae10b.r15.cf1.rackcdn.com/Gerald-Rhemann-2015ER61-small_1491398296_lg.jpg)

http://www.itelescope.net/sky-alerts/2017/4/5/alert-comet-c2015-er61-panstarrs-is-in-outburst.html

(http://www.itelescope.net/storage/C2015ER61_GRAS_chart_Apr.png?__SQUARESPACE_CACHEVERSION=1491383346133)


http://cometografia.es/2015er61-panstarrs-20170404/
(http://cometografia.es/wp-content/photo-gallery/2017/thumb/2015ER61_20170401-04.jpg)

https://groups.yahoo.com/neo/groups/CometObs/conversations/messages/7096

41P/Tuttle-Giacobini-Kresak:2017 Apr. 4.10 UT: m1=6.4, Dia.=25', DC=3, 12x45 monocular.

C/2017 E4 (Lovejoy):2017 Apr. 4.16 UT: m1=6.9, Dia.=4', DC=7, 10x50B.

C/2015 ER61 (PANSTARRS):2017 Apr. 4.17 UT: m1=7.4, Dia.=4', DC=6, 10x50B.

C/2017 E1 (Borisov):2017 Apr. 4.19 UT: m1=8.5, Dia.=5', DC=2, 20 cm SCT (100x).

C/2015 V2 (Johnson ):2017 Apr. 4.12 UT: m1=9.4, Dia.=4', DC=4,

http://astroblogger.blogspot.tw/2017/04/comet-c2015-er61-panstarrs-is-in.html

Comet C/2015 ER61 is confirmed to be in outburst, with reports of magnitudes between 7.4 and 6.5, up from a pre-outburst level of 8.4.

(http://pic.astron.ac/forum/201704/05/224950wi1ao1ji4nhjosat.png)

http://www.skyandtelescope.com/astronomy-news/comet-er61-panstarrs-in-outburst-binocular-bright/
(http://www.skyandtelescope.com/wp-content/uploads/ER61-track-in-April-1.jpg)

TERRY LOVEJOY 本人拍ER61

目前也很亮


https://www.facebook.com/photo.php?fbid=820377468113958&set=a.105859272899118.15766.100004251372422&type=3&theater
(https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17759723_820377468113958_7680580505998703971_n.jpg?oh=b6e55a621fa57f318f94534e9ae0787f&oe=5997CB98)
combining 90 images of 8 seconds exposure using the Qhyccd 183c camera and Starizona Hyperstar with a Celeston C14 taken at 18:12hrs, April 6 UT. Comet was easily visible in binoculars at the time

C/2015 ER61  為何突然變亮??

是否分裂??

er61 發生何事??
彗星 亮度    靜止僵持 ?

c/2013 x1

c/2000 wm1

c/2015 er61 

https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/26500


Standstill comet | Joe Garlitz - Sky & Telescope
http://www.skyandtelescope.com/online-gallery/standstill-comet/

https://www.flickr.com/photos/128758169@N05/33781501702/

C2015ER61_20170407UT1741_rev1

http://astrocometas.blogspot.tw/

(https://2.bp.blogspot.com/-jg075I8NcZ8/WO4Xc0B9e9I/AAAAAAAAA4A/rNrq3adtIJMt0MUI9g_EQr-XXSEJrnbDACLcB/s1600/curve%2Ber61.png)

C/2015 ER61

http://tamweb.tam.gov.tw/v3/tw/content.asp?mtype=c1&idx=1352

 2017/05/01(一)  C/2015 ER61彗星最亮

目前可觀察彗星中最亮的泛星彗星（C/2015 ER61(PanSTARRS)）將在5/1達到最亮的7.1等，之後一直到5/10過軌道近日點的這段期間，亮度都可維持在7等左右。5月初可在凌晨2:20以後一直到約4:20天亮前的這段時間進行觀察，這顆彗星將位在東方仰角25度以下的低空中。這顆彗星目前位在寶瓶座，往雙魚座小環的方向前進，鄰近金星與海王星，所以可嘗試著將它們一起捕捉下來。

(http://tamweb.tam.gov.tw/v3/tw/item_img/2017_2nd/20170428-5.JPG)

星期六凌晨來打一下...

http://spaceweathergallery.com/indiv_upload.php?upload_id=135362&PHPSESSID=856a9jdkjtf6r0g12i6oj9qjm7

(http://spaceweathergallery.com/full_image.php?image_name=Paul-C-Robinson-Mean13-2-PS-15ER61-slgtOutFoc.pub_1494096900.jpg)

http://www.skyandtelescope.com/observing/comet-johnson-makes-a-splendid-sprint-through-bootes/

(http://www.skyandtelescope.com/wp-content/uploads/Panstarrs-ER61-May-June-2017_V2.jpg)

https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/26618

ER61 碎片

http://www.astronomie.be/erik.bryssinck/c2015er61_20170613.html

(http://www.astronomie.be/erik.bryssinck/C2015ER61_20170613_Bryssinck-Hambsch.jpg)

https://www.virtualtelescope.eu/2017/06/18/comet-c2015-er61-b-fragment-of-comet-c-2015-er61-panstarrs-17-june-2017/

(https://www.virtualtelescope.eu/wordpress/wp-content/uploads/2017/06/c2015er61_fragment_17june2017.gif)

UPDATE


http://astrogeoguy.tumblr.com/

(http://68.media.tumblr.com/7cd30c5d1509af74ce2057a3acd7cbfc/tumblr_inline_os4h6eLnao1rxan1s_1280.png)

http://aerith.net/comet/catalog/2015ER61/2015ER61.html

很暗吧

不過在 M45 附近



(http://aerith.net/comet/catalog/2015ER61/mag2.gif)