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The planet around 61 Cygni B was first reported in the 1890s by the American astronomer Thomas J. J. See (1867-1960), then at the Leander McCormack Observatory. See specialized in studying binary stars to determine their orbits, and it was the gravitational effect of this planet on the motion of 61 Cyg B that led him to submit an article claiming a third object in the 61 Cyg system. He did not claim a planet, but any astronomer checking his figures could see this was no star. The resultant controversy effectively destroyed See's career, and he was forced to leave his post. He wound up doing mathematical work for the Naval Observatory, and long outlived his foes.
The mention that there might be a planet of 61 Cygni is unsourced in the article and rather inprecise. If it is only a dubious and decades out-of-date claim then that should be noted. In any event references should be given. From 61 Cygni 2, I have links to this 1943 paper claiming a planet, this 1957 paper also claiming one and a 1978 paper attempting to refute such claims. MichaelSH 19:13, 1 October 2006 (UTC)
The statement "From the point of the view of the casual astronomical observer, 61 Cygni is not particularly spectacular." seems to me to be a matter of opinion and therefore does not belong here. I think it should be deleted unless someone seriously objects and can cite a verifiable source for the statement. Chris 19:25, 10 August 2006 (UTC)
This is from page 302 of the book "The Nine Planets" (copyright 1970) "Of course, the theories of cosmology do not prove that other solar systems exist. But in recent years other convincing evidence has appeared to indicate that they do. For those who were heartily eager to believe that other solar systems might someday be found as possible repositories of intelligent life, the most encouraging discovery imaginable has been made in recent years: at least two other stars have been shown definitely to have at least one planet apiece. And for a race of creatures about to leap into space and explore their own solar system, that discovery has breathtaking significance. Granted that no one yet has actually seen a planet of another star. The star systems involved are 61 Cygni and 70 Ophiuchi. Both of these are double-star systems and are close enough to be observed and studied fairly well. In each case, astronomers observed that the two stars in the binary systems were not moving around each other in quite the fashion they ought to be. Their orbits deviated a tiny bit from the expected pattern. With no other factors that could possibly be causing such deviations, only one explanation was possible. In each of these systems the "A" and "B" components (the double stars that could be seen) were being influenced by a dark "C" component. In either case it was possible to calculate the characteristics of such a "C" component. It would have to be another stellar or planetary body, but not a very large one because its influence on the "A" and "B" components was very small. The observers concluded that the "C" component in the 61 Cygni system was a dark mass of matter with approximately the weight of sixteen Jupiters, while in 70 Ophiuchi the "C" component was a nonluminous body with the mass of ten and one-half Jupiters." (User: Zachariahskylab)
The net proper motion μ of 61 Cygni is:
The Moon is about a half-degree across, or ~1,800 arc seconds. So 61 Cygni will traverse the diameter of the Moon in years. I am wondering where the 150 year figure came from. Any ideas? — RJH ( talk) 19:03, 24 July 2007 (UTC)
The change in declination is 3259.39 mas per year, not 4109.17. —Preceding unsigned comment added by 77.127.10.172 ( talk) 11:45, 10 September 2009 (UTC)
I am glad to report that this article nomination for good article status has been promoted. This is how the article, as of October 3, 2007, compares against the six good article criteria:
If you feel that this review is in error, feel free to take it to Good article reassessment. Thank you to all of the editors who worked hard to bring it to this status, and congratulations. — ++ Lar: t/ c 01:39, 3 October 2007 (UTC)
Do we really need to mention that "61 Cygni" should not be confused with "16 Cygni" in the lead? I'm not clear what value, if any, that paragraph provides. It is also unsourced. At most a hatnote should suffice.— RJH ( talk) 18:39, 23 September 2008 (UTC)
The parallax of the star is given as 287.18 ± 1.51[1] mas, where mas links to minutes of arc. Shouldn't it be milliarcseconds instead? 202.129.234.249 ( talk) 06:17, 20 April 2010 (UTC)
The international standard symbol for astronomical unit is au, not AU. It is confusing to introduce a non-standard symbol. Dondervogel 2 ( talk) 18:54, 16 June 2015 (UTC)
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Hi, its been three years since the last two FA nominations and I am ready to pick up the baton and run for it once again. Anybody willing to, are more than welcome to join the ride. Thanks. The Herald (Benison) ( talk) 16:16, 8 November 2018 (UTC)
This is the
talk page for discussing improvements to the
61 Cygni article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
61 Cygni has been listed as one of the Natural sciences good articles under the good article criteria. If you can improve it further, please do so. If it no longer meets these criteria, you can reassess it. | |||||||||||||||||||||||||
|
This article is rated GA-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||
|
The planet around 61 Cygni B was first reported in the 1890s by the American astronomer Thomas J. J. See (1867-1960), then at the Leander McCormack Observatory. See specialized in studying binary stars to determine their orbits, and it was the gravitational effect of this planet on the motion of 61 Cyg B that led him to submit an article claiming a third object in the 61 Cyg system. He did not claim a planet, but any astronomer checking his figures could see this was no star. The resultant controversy effectively destroyed See's career, and he was forced to leave his post. He wound up doing mathematical work for the Naval Observatory, and long outlived his foes.
The mention that there might be a planet of 61 Cygni is unsourced in the article and rather inprecise. If it is only a dubious and decades out-of-date claim then that should be noted. In any event references should be given. From 61 Cygni 2, I have links to this 1943 paper claiming a planet, this 1957 paper also claiming one and a 1978 paper attempting to refute such claims. MichaelSH 19:13, 1 October 2006 (UTC)
The statement "From the point of the view of the casual astronomical observer, 61 Cygni is not particularly spectacular." seems to me to be a matter of opinion and therefore does not belong here. I think it should be deleted unless someone seriously objects and can cite a verifiable source for the statement. Chris 19:25, 10 August 2006 (UTC)
This is from page 302 of the book "The Nine Planets" (copyright 1970) "Of course, the theories of cosmology do not prove that other solar systems exist. But in recent years other convincing evidence has appeared to indicate that they do. For those who were heartily eager to believe that other solar systems might someday be found as possible repositories of intelligent life, the most encouraging discovery imaginable has been made in recent years: at least two other stars have been shown definitely to have at least one planet apiece. And for a race of creatures about to leap into space and explore their own solar system, that discovery has breathtaking significance. Granted that no one yet has actually seen a planet of another star. The star systems involved are 61 Cygni and 70 Ophiuchi. Both of these are double-star systems and are close enough to be observed and studied fairly well. In each case, astronomers observed that the two stars in the binary systems were not moving around each other in quite the fashion they ought to be. Their orbits deviated a tiny bit from the expected pattern. With no other factors that could possibly be causing such deviations, only one explanation was possible. In each of these systems the "A" and "B" components (the double stars that could be seen) were being influenced by a dark "C" component. In either case it was possible to calculate the characteristics of such a "C" component. It would have to be another stellar or planetary body, but not a very large one because its influence on the "A" and "B" components was very small. The observers concluded that the "C" component in the 61 Cygni system was a dark mass of matter with approximately the weight of sixteen Jupiters, while in 70 Ophiuchi the "C" component was a nonluminous body with the mass of ten and one-half Jupiters." (User: Zachariahskylab)
The net proper motion μ of 61 Cygni is:
The Moon is about a half-degree across, or ~1,800 arc seconds. So 61 Cygni will traverse the diameter of the Moon in years. I am wondering where the 150 year figure came from. Any ideas? — RJH ( talk) 19:03, 24 July 2007 (UTC)
The change in declination is 3259.39 mas per year, not 4109.17. —Preceding unsigned comment added by 77.127.10.172 ( talk) 11:45, 10 September 2009 (UTC)
I am glad to report that this article nomination for good article status has been promoted. This is how the article, as of October 3, 2007, compares against the six good article criteria:
If you feel that this review is in error, feel free to take it to Good article reassessment. Thank you to all of the editors who worked hard to bring it to this status, and congratulations. — ++ Lar: t/ c 01:39, 3 October 2007 (UTC)
Do we really need to mention that "61 Cygni" should not be confused with "16 Cygni" in the lead? I'm not clear what value, if any, that paragraph provides. It is also unsourced. At most a hatnote should suffice.— RJH ( talk) 18:39, 23 September 2008 (UTC)
The parallax of the star is given as 287.18 ± 1.51[1] mas, where mas links to minutes of arc. Shouldn't it be milliarcseconds instead? 202.129.234.249 ( talk) 06:17, 20 April 2010 (UTC)
The international standard symbol for astronomical unit is au, not AU. It is confusing to introduce a non-standard symbol. Dondervogel 2 ( talk) 18:54, 16 June 2015 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on 61 Cygni. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
An editor has reviewed this edit and fixed any errors that were found.
Cheers.— InternetArchiveBot ( Report bug) 20:12, 2 December 2017 (UTC)
Hi, its been three years since the last two FA nominations and I am ready to pick up the baton and run for it once again. Anybody willing to, are more than welcome to join the ride. Thanks. The Herald (Benison) ( talk) 16:16, 8 November 2018 (UTC)