Comet C/2015 V2 (Johnson) 要到最亮時間了

[peter]

Comet C/2015 V2 (Johnson)  要到最亮時間了

==
C/2015 V2 (JOHNSON)

http://www.aerith.net/comet/catalog/2015V2/2015V2.html



==

http://remanzacco.blogspot.tw/2015/11/new-comet-c2015-v2-johnson.html



11月初發現  就能算出亮度?

==


http://www.skyandtelescope.com/online-gallery/comet-c2015-v2-johnson-on-2016-dec-19/
Comet C/2015 V2 (Johnson) on 2016 Dec. 19

[peter]

http://esplaobs.blogspot.tw/2016/12/c2015-v2-taken-by-piotr-dzikowski-on.html

[peter]

UPDATE
January 30th, 2017
http://www.schursastrophotography.com/newcomets/JohnsonV2-013017.html

[peter]

http://www.cloudynights.com/topic/563754-comet-c2015-v2-johnson/



https://www.flickr.com/photos/16590526@N07/32550567221


 Roger Hutchinson
20170202 C2015 V2 Johnson LRGB

Comet C/2015 V2 Johnson imaged from Mayhill New Mexico on 2nd February 2017

LRGB image 10 mins luminance, 4 mins each R, G & B channels plus calibration frames.

Planewave 17" CDK f4.5

FLI-PL6303E CCD Camera


 

[peter]

彗星 會靠近 41p

[peter]

FB 甘醫生

https://www.facebook.com/photo.php?fbid=1277798052341164&set=a.195711703883143.42548.100003329437162&type=3&theater



Comet C/2015 V2 (Johnson)

彗星，宇宙的遊子，真的就是美...

VC200L(1800mm, f/9)+6D(mod) on Vixen SXP + WO50208 Lacerta M-Gen Guiding
ISO 3200, 603s*7 w Dark, Flat,(70m21s)

[peter]

尾巴開始彎了


https://scontent-tpe1-1.xx.fbcdn.net/v/t1.0-9/17796661_1451806231556844_3284507241848829218_n.jpg?oh=41f42828ce5f95908a5087347eddeafc&oe=599636D3



 

[peter]

http://www.cometwatch.co.uk/bright-comets-of-2017/c2015-v2-johnson/










https://theskylive.com/c2015v2-info

[peter]

C/2015 V2 

[peter]

UPDATE

https://www.flickr.com/photos/128758169@N05/33975454761/

[peter]

https://britastro.org/node/10000

出現離子尾

不過亮度不高 ..

[peter]

https://www.universetoday.com/135578/comet-v2-johnson-takes-center-stage/

[Daniel Guo]

有點想拍, 不過看IAU觀測記錄:
C/2015 V2 (Johnson)                 2017 05 16.97  12.1 N  I81
12.1星等要拍得好, 看來還是要花一番功夫.

[peter]

 C/2015 V2  應該是約 8.x 等吧
不是 12等 


41P:
2017 May 18.83 UT: m1=9.5, Dia.=6', DC=2,  ...25-cm L (42x, 70x, 150x) ...Danil Sidorko (Korenovsk, Russia)

C/2015V2:

2017 May. 18.84 UT: m1=8.4, Dia.=6.2', DC=3/, tail 3' in RA 310  ...25-cm L (42x, 70x) ...Danil Sidorko (Korenovsk, Russia)
 

[Daniel Guo]

http://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=C/2015%20V2

2017 05 03.04620    15 49 18.27    +43 13 30.9    14.0 N    A77 – Observatoire Chante-Perdrix, Dauban    MPC 104036
2017 05 03.84549    15 47 33.32    +42 55 21.5    11.9 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 03.85662    15 47 31.85    +42 55 06.1    12.4 N    I57 – Elche    MPC 104036
2017 05 03.85944    15 47 31.38    +42 55 02.4    11.9 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 03.86034    15 47 31.34    +42 55 00.9    12.4 N    I57 – Elche    MPC 104036
2017 05 03.86179    15 47 31.16    +42 54 58.8    12.4 N    I57 – Elche    MPC 104036
2017 05 03.86562    15 47 30.56    +42 54 54.4    11.9 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 03.87223    15 47 29.68    +42 54 44.4    11.9 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 03.88299    15 47 28.26    +42 54 30.2    11.9 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 05.83683    15 43 04.81    +42 06 36.0    13.3 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 05.84179    15 43 04.18    +42 06 28.4    13.4 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 05.84801    15 43 03.23    +42 06 19.4    13.3 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 05.85446    15 43 02.36    +42 06 09.8    13.3 N    K14 – Observatorio de Sencelles    MPC 104036
2017 05 05.85986    15 43 01.68    +42 06 01.4    13.3 N    K14 – Observatorio de Sencelles    MPC 10403

最新: http://www.minorplanetcenter.net/iau/lists/LastCometObs.html
C/2015 V2 (Johnson)                 2017 05 16.97  12.1 N  I81

剛和COBS - Comet OBServation database對比了一下, COBS的觀測都是m1 (整體亮度). IAU在亮度後面的字母, N代表核心亮度, T代表整體亮度. 所以目前的整體亮度是8等左右, 核心亮度是12.1等.