C/2017 O1 彗星

[peter]

http://www.minorplanetcenter.net/mpec/K17/K17O45.html

鯨魚座
https://www.britastro.org/node/10782

https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/26682
C/2017 O1 - ASASSN1:
2017 July 23.13 UT: m1=9.8, Dia.=5', DC=2/, 20 cm SCT (77x).


http://www.forumastronomiczne.pl/index.php?/topic/12678-c2017-o1/

[peter]

http://spaceweathergallery.com/indiv_upload.php?upload_id=137135

[peter]

C/2017 O1   ASASSN  "All-Sky Automated Survey for Supernovae" (ASASSN) program, 

http://remanzacco.blogspot.tw/2017/07/new-comet-c2017-o1.html

[peter]

http://www.aerith.net/comet/catalog/2017O1/2017O1.html

[peter]

https://www.universetoday.com/136564/new-comet-c2017-o1-asas-sn-takes-earth-surprise/





October

1-Reaches max brightness?

12-Crosses the galactic equator northward.

14-Reaches perihelion 1.5 AU from the Sun.

17-Crosses into Camelopardalis.

18- Passes closest to Earth at 0.722 AU distant.

29-Passes 10′ from the +4 mag star Alpha Camelopardalis.

November

17-Crosses into Cepheus

December

6-Passes 3 degrees from the north celestial pole.

12-Reaches opposition.

31-Drops back down below +10th magnitude

[peter]

https://www.facebook.com/photo.php?fbid=1784895961525356&set=gm.1481831188540373&type=3&theater

 https://www.facebook.com/harry891119/videos/1784899594858326/
 

[peter]

http://www.skyandtelescope.com/observing/sky-surprises-new-comet-c2017-o1-scutum-nova-and-a-supernova-to-boot/

[peter]

http://www.itelescope.net/sky-alerts/2017/7/30/alert-bright-new-cometc2016-01.html

[peter]

https://groups.yahoo.com/neo/groups/comets-ml/conversations/messages/26696

動畫

Animation: https://www.flickr.com/photos/43846774@N02/35912446330/


Positive image: https://www.flickr.com/photos/43846774@N02/36307037485/


Negative image: https://www.flickr.com/photos/43846774@N02/36139775382/

[peter]

http://www.spaceweathergallery.com/indiv_upload.php?upload_id=137298&PHPSESSID=rkiqjpa3o6s3rnoai98aus88o6

http://www.spaceweathergallery.com/full_image.php?image_name=Graziano-Ventre-2017-08-05-C-2017-ER61-_-C-2015-O1_1501913355.jpg&PHPSESSID=ig4hnihggffgmlqgbdi6rsq4g7

[peter]

https://in-the-sky.org/news.php?id=20171016_18_100

10月會到最亮

可以看到

[peter]

甘醫生拍了

http://familystar.org.tw/index.php?option=com_smf&Itemid=45&topic=28957.new#new

https://www.facebook.com/photo.php?fbid=1440031409451160&set=a.103821636405484.4761.100003329437162&type=3&theater

[peter]

北半球可以看

[peter]

https://www.space.com/38382-comet-asas-sn-skywatching-binoculars.html

Sky map showing the location of Comet C/2017 O1 ASAS-SN on the night of Oct. 6, 2017, as seen from New York City.

For much of October, O1 ASAS-SN is anticipated to be about magnitude +8, possibly brightening to +7, both of which are below naked-eye visibility but easily observable in binoculars or small telescopes. [Best Night Sky Events of October 2017 (Stargazing Maps)]

[peter]

damian  peach 拍