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Comet 21P/Giacobini-Zinner [Beautiful green comet]
Comet Watch UK ^
| 2018
| editors
Posted on 08/25/2018 10:59:05 AM PDT by SunkenCiv
Giacobini-Zinner’s return in 2018 is a promising one as it passes the Earth at a distance of 0.39 au. In June, 2018, 21p will be observable from modest sized telescopes sitting in the constellation of Cygnus reaching a brightness of magnitude 11 by month end. Although for many in the northern hemisphere, the sky will not reach true astronomical darkness all month. Between 17-21 June, the comet will skim past the ‘Mexico’ region of the North America nebula making for a nice widefield shot for photographers (again battling the twilight). The comet will then brighten rapidly through July and August by which time the nucleus may reach naked eye visibility. Rising in the late evenings, 21p remains well placed for observation for most of the summer.
On the night of 03 September, the comet will lie just over 1 degree from bright star Capella in Auriga making it much easier to locate. The comet reaches closest approach on the night 10/11 September, 2018 after which it rises after midnight. Current predictions peak at magnitude 6, so only just within the naked eye threshold. Through the summer months, comet 21p passes within close visual proximity to quite few deep sky objects during its journey through Cygnus, Camelopardalis, Auriga and Monoceros.
(Excerpt) Read more at cometwatch.co.uk ...
TOPICS: Astronomy; Science
KEYWORDS: 21p; astronomy; auriga; camelopardalis; capella; comet; cygnus; giacobinizinner; greencomet; monoceros; science
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1
posted on
08/25/2018 10:59:05 AM PDT
by
SunkenCiv
To: brytlea; cripplecreek; decimon; disndat; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
2
posted on
08/25/2018 11:03:12 AM PDT
by
SunkenCiv
(www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
To: SunkenCiv
Ah! Capella will have accompaniment.
3
posted on
08/25/2018 11:07:51 AM PDT
by
null and void
(The only people opposing voter ID are people who benefit from voter fraud.)
To: null and void
4
posted on
08/25/2018 11:17:03 AM PDT
by
SunkenCiv
(www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
To: SunkenCiv
5
posted on
08/25/2018 11:20:38 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: SunkenCiv
Seeing the tail of a comet through night vision is spectacular.
6
posted on
08/25/2018 11:21:30 AM PDT
by
Sasparilla
( I'm Not Tired of Winning)
To: SunkenCiv
7
posted on
08/25/2018 11:25:50 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: All
8
posted on
08/25/2018 11:30:09 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: All
9
posted on
08/25/2018 11:31:23 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: All
10
posted on
08/25/2018 11:34:42 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: All
Re: Post 10 “Magnitude”
The LOWER the magnitude number, the brighter the object. Negative magnitudes are the most bright.
11
posted on
08/25/2018 11:37:33 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: ETL; Sasparilla
12
posted on
08/25/2018 11:41:45 AM PDT
by
SunkenCiv
(www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
To: SunkenCiv
You’re welcome.
Thanks for the heads up on the comet.
13
posted on
08/25/2018 11:52:22 AM PDT
by
ETL
(Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
To: ETL
To: thecodont
About 1000 times dimmer though and doesn’t have a 40 deg tail.
I saw GZ a few weeks ago. Wasn’t bright but the tail was still visible.
15
posted on
08/25/2018 12:12:01 PM PDT
by
Conan the Librarian
(The Best in Life is to crush my enemies, see them driven before me, and the Dewey Decimal System)
To: SunkenCiv
16
posted on
08/25/2018 1:20:11 PM PDT
by
BenLurkin
(The above is not a statement of fact. It is either satire or opinion. Or both.)
To: SunkenCiv
17
posted on
08/25/2018 1:39:54 PM PDT
by
left that other site
(For America to have CONFIDENCE in our future, we must have PRIDE in our HISTORY... DJT)
To: Sasparilla
Seeing the tail of a comet through night vision is spectacular.
Never seen one. Living in a metropolitan area such as mine, one never gets to view the night sky as it should be.
I've had the fortune to spend several pheasant hunting trips to N.W. Kansas and stayed in a farm house where the night sky was completely devoid from any city light corruption.. It was magnificent........And being in the fall, while you couldn't see them because of the darkness, you would hear the honking of the migrating geese high up in the sky.
18
posted on
08/25/2018 1:47:20 PM PDT
by
Hot Tabasco
(I once found a needle in a haystack but it wasn't the one I was looking for...)
To: BenLurkin
Seasick, er, I mean spacesick probably.. ;-)
19
posted on
08/25/2018 2:56:37 PM PDT
by
NoCmpromiz
(John 14:6 is a non-pluralistic comment.)
To: BenLurkin
Why is it green?
I'm sure it's not easy.
Oh, sorry.
Green comets are not all that rare, it indicates sodium I think.
20
posted on
08/26/2018 7:31:07 AM PDT
by
SunkenCiv
(www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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