Talk:Comet Encke

Cultural aspects

Hi, thanks for creating the page.. I thinks the comet's influences are relevent. This page is an entry on a particular comet, but wikipedia IS NOT an astronomical encyclopedia so any important cultural aspects should be fine unless of course they go into great detail - then another article or stub is needed. As for the link - if the info in the article is relevent then a link on that topic should be fine. I feel that comets, evolution and extinction-level events (although very tv-friendly) are serious, currently debated topics within science and astronomy (spaceguard etc). I think it is unrealistic to expect an article on a comet to be purely composed of cosmological or astrophysical information. I deliberatly kept it short so it wouldn't dominate the article. HOWEVER perhaps I should section it off into "Comet Encke in History" or something similar - check out Moon Solar Eclipse thunder lightning (which has a section on "Lightning in contemporary culture") for starters. I think a disambugation (spelt right?) page is unneccessary... max rspct

Ok, here is what I think in more detail. First, the question of this topic being worth WP was not meant as saying it is not. My problem is that I only see this link to a talk and I have no idea how notable this theory is. And notable to me means that is noted by other peers in the field and discussed. In case that it is too new for this to happen, we should wait with bringing it into WP (original research). If the theory is out there for decades and not discussed at all, it seems also not "good enough" for WP. Hope this clears things up a bit.

Secondly, if it is to be added to WP, I propose an extra article about the relationship of comets and the end of the Bronze Age. And then we can ref to Comet Encke were appropriate. And maybe add a "See also" section here. I feel the main purpose of this article is the astronomical facts about Encke.

Ok I insist it is worthy - I know it looks lovely and minimalist with just the cometary info .. but i feel it is important for anyone looking up this page on comet Encke should be given the chance to see information which I assure u is both revelant and seriously connected with the comet by academics. It HAS been debated for years (i'm suprised you don't think it appropriate) and there has been plenty of serious debate and peer noting/discussion .... comet master Fred Whipple had no doubts about the connections between cometary debris and destructive events. In fact he considered the Tunguska event to be linked to Encke although I have not put this in here. : "The composition of the Tunguska body remains a matter of controversy. In 1930, the British astronomer F.J.W. Whipple suggested that the Tunguska body was a small comet. A cometary meteorite, being composed primarily of ices and dust, could have been completely vaporized by the impact with the Earth's atmosphere, leaving no obvious traces. The comet hypothesis was further supported by the glowing skies (or "skyglows") observed across Europe for several evenings after the impact, apparently caused by dust that had been dispersed across the upper atmosphere. In addition, chemical analyses of the area have shown it to be rich in cometary material. In 1978, Slovak astronomer Lubor Kresak suggested that the body was a piece of the short-period Comet Encke, which is responsible for the Beta Taurid meteor shower; the Tunguska event coincided with a peak in that shower. It is now known such bodies regularly explode tens to hundreds of kilometres before hitting the ground, as military satellites have been observing such explosions for decades."................ As for Bronze age collapse i should have linked to something a bit better ... How about this one- Natural Catastrophes During Bronze Age Civilisations: Archaeological, geological, astronomical and cultural perspectives Here is an overview [[1]]and an in-depth paste up of the conference -[2] and an bit from Dr Bill Napier's abstract -[3] (does that one convince u??) ; space.com article on craters in Iraq -[[4]] - it is from around the same time as the National Geographic one that i am still trying to find in my local library and the BBC news article that has been taken down. And here is an article from Dr Benny Peiser although it doesn't directly mention comet Encke [5]

Also for the swastika bit ... please check out that swastika page (and also look at our WHAT LINKS HERE PAGE and also see how many other people are contributed on these associated themes .. lightning , solar eclipse etc) Comet Encke has been consistently cited as having a very large influence on the development of the swastika. Check out this on-line study Wilson's 1894 work on it - (u have to download Dejavu plug-in) [6] I will email Benny Peiser and possibly visit local observatory ..after festivities ....MERRY XMAS from max rspct p.s just in case your worrying (my user contributions look a bit dark) am not a nazi or conspiracy theory disseminator. addendum- consider the beau Pleiades (star cluster) article and how it has developed and please note the included folklore sections - surely there is a place for wider academic and cultural information. max rspct 29th Dec 2004

Update

This page needs to be updated, as the next appearance listed for this comet has come and gone. TransNique 09:06, 5 September 2007 (UTC)

Done. --Chesnok 05:05, 6 September 2007 (UTC)

This page needs to be updated, as the next appearance listed for this comet has come and gone. —Preceding unsigned comment added by 122.164.220.168 (talk) 08:52, 8 August 2010 (UTC)

Done. — Chesnok (talk • contribs) 17:35, 16 August 2010 (UTC)

This page needs to be updated, as the next appearance listed for this comet has come and gone. 82.132.229.124 (talk) 00:07, 28 November 2013 (UTC)

Both

Caroline Herschel and Pierre Mechain are both said to have discovered Comet Encke. —Preceding unsigned comment added by 86.155.158.10 (talk) 14:48, 12 February 2008 (UTC) In the article on Caroline, it now says that she re-discovered the comet in 1795. —Preceding unsigned comment added by 78.105.36.65 (talk) 15:12, 15 January 2010 (UTC)

1944

The guinness book of astronomy facts and feats claims that return of 1944 was missed. Is this actualy the case?Geni 17:55, 1 September 2008 (UTC)

Found a couple of heavyweight scientific publications that support no 1944 observations:

• http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1974AJ.....79..413M&db_key=AST&page_ind=3&plate_select=NO&data_type=GIF&type=SCREEN_GIF&classic=YES
• http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?bibcode=1988AJ.....95..911S&db_key=AST&page_ind=1&plate_select=NO&data_type=GIF&type=SCREEN_GIF&classic=YES

©Geni (talk) 10:35, 25 July 2020 (UTC)

Discussion

there is a paragraph like this in the text: "The tail of Comet Encke was temporarily torn off on November 1st, 2007 by magnetic field disturbances caused by a Coronal Mass Ejection (CME) - a blast of solar particles from the sun. The tail will grow back due to the continuous shedding of dust and gas by the comet.[1]"

in the description the event is on Nov.1, 2007, while the reference is linked to a APJ news in October, 2007. —Preceding unsigned comment added by Isotisp (talk • contribs) 06:31, 6 September 2008 (UTC)

Length of Orbit

How long is the distance comet Encke travels in three years? How many kilometers does Encke travel in its orbit around the sun? 209.40.210.222 (talk) 04:46, 26 February 2009 (UTC)

10.923 au, or about 1.634 billion km Saros136 (talk) 05:50, 26 February 2009 (UTC)

I used the osculating elements for today and a program I wrote using a formula (infinite series) in Astronomical Algorithms, by Jean Meeus. Using the numbers from the article, I get the same thing. Saros136 (talk) 05:54, 26 February 2009 (UTC)

By the way, its average speed is 15.7 km/s Saros136 (talk) 06:07, 26 February 2009 (UTC)

How about a diagram?

The info on the orbit of this comet is in the info box, but it would be helpful if there was a diagram of the inner solar system, showing the orbit of the comet against the background of the orbits of Mercury, Venus, Mars and Earth. Does the comet move in much the same plane as these planets. Myles325a (talk) 03:29, 17 February 2011 (UTC)

Bright Comet

In this article, it says that "During the November 2013 perihelion passage the comet is expected to brighten to apparent magnitude 7". However, the Starry Night program says that 2P/Encke is already brighter than magnitude 6. I think this should be clarified. Carbon6 ^talk 04:55, 10 November 2013 (UTC)

Seiichi Yoshida says It is only magnitude 7 as of Nov 8. Besides, Starry Night is a generic astronomy program making a crude guess. -- Kheider (talk) 08:54, 10 November 2013 (UTC)

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Possibly useful papers

• 1975 NASA study of a flyby mission

• Comet Notes", Mercury 1, No. 1, 18-19. Roemer, E doesn't appear to be online but probably contains the first report of images of the comet closer to aphelion than the 1913 effort

• Sekanina, Z (December 1991). "Encke, the comet". Journal of the Royal Astronomical Society of Canada. 85 (6): 324–376. Retrieved 25 July 2020.

• A note on the cometary nucleus covers Roemer's attempts aphelion 3 September 1972

• RADAR observations

©Geni (talk) 19:31, 25 July 2020 (UTC)

The End of an Era in Cometary Astronomy: The Deceleration of Comet Encke if it ever makes it through peer review.©Geni (talk) 06:50, 11 April 2022 (UTC)

Removed external link

• Importance in history of luminiferous aether, search for Encke's comet

Old textbook talking about the comet in the context of luminiferous aether.©Geni (talk) 16:56, 2 September 2020 (UTC)

1828

This says the comet appeared in 1828 Broichmore (talk) 15:50, 2 September 2021 (UTC)

The MPC and JPL[1828] (SAO/1829) have perihelion on 1829-01-10 so it would have been visible about 120 degrees from the Sun around 1828-Nov-07. -- Kheider (talk) 22:21, 2 September 2021 (UTC)

Commentary from 1826 of interest?

Several journals and almanacs syndicated a column discussing this comet - and predicting the date it would hit the Earth.

See https://books.google.co.uk/books?id=QEQEAAAAQAAJ&pg=PA191#v=onepage&q&f=false Edent (talk) 10:49, 13 June 2023 (UTC)