Talk:Tyche (hypothetical planet): Difference between revisions

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A fact from Tyche (hypothetical planet) appeared on Wikipedia's Main Page in the Did you know column on 21 February 2011 (check views). The text of the entry was as follows:

Did you know... that in 1999, a giant planet was hypothesized to exist in the outer Oort cloud of the solar system, but most astronomers are skeptical of its existence?

A record of the entry may be seen at Wikipedia:Recent additions/2011/February.

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-== Ask an Astrobiologist ==
-* [http://astrobiology.nasa.gov/ask-an-astrobiologist/question/?id=16790 Ask an Astrobiologist] ([[Astrophysicist]] [[David Morrison (astrophysicist)|David Morrison]] : August 2, 2011)
-I was going to delet this as spam ^^ but then saw that it is actually a NASA article mentioning the Tyche theory, as well as the Nemesis theory (and therefore maybe a valid reference for this article, I have not read all of the NASA article though, so I can't be sure yet). The person who posted this link should have taken a moment to explain what the link was for, rather than just posting the bare link with no explanation whatsoever. -- [[Special:Contributions/129.82.31.128|129.82.31.128]] ([[User talk:129.82.31.128|talk]]) 03:10, 11 November 2011 (UTC)
-:I added the link to the talk page since it is a good link for the woo-woos to see. I have now also hyperlinked David Morrison's name for people that do not follow astronomy.  But I am also not sure it would add much to the Tyche article as a reference. [[Nemesis (hypothetical star)|Nemesis]] (a red dwarf star/brown dwarf) is not expected to exist because it should have been fairly obvious (bright) in previous J-Band infrared surveys, but it is plausible that there is a Jupiter mass object near the edge of the solar system. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 13:10, 11 November 2011 (UTC)
-==Alternative Theory for Disturbance of Sedna?==
-A new science article came out today which could certainly be a presentation of an alternate theory on the cause of Sedna's disturbed orbit. But it does not come right out and say it, so it could not (yet) be used as a source until there is an explicit theoretical connection drawn by scientific sources. But that may not be too far away. Here is the article (from a credible science source): http://www.sciencedaily.com/releases/2011/11/111110142102.htm -- [[Special:Contributions/129.82.31.128|129.82.31.128]] ([[User talk:129.82.31.128|talk]]) 03:06, 11 November 2011 (UTC)
-:That's referring to [[Hypothetical fifth gas giant|this idea]], I think. Sedna isn't mentioned in that article, so connecting it to this hypothesis would be OR. <b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 10:49, 11 November 2011 (UTC)
-::A hypothetical fifth [[Gas giant|ice giant]] being ejected from the early solar system has nothing to do with planet Tyche. Jupiter is not massive enough to eject a body more massive than itself. See: [http://arxiv.org/abs/1109.2949 Young Solar System's Fifth Giant Planet?] for David Nesvorny's arxiv paper. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 13:10, 11 November 2011 (UTC)
-Rather than opining, the mention of this new article just alerts editors that an alternative theory along these lines might show soon, although the recent article does not mention Sedna (and so the point is just that it might be helpful to watch science news outlets-- in case a new reference does emerge). I was not promoting any theory but just staying alert to an emerging potential source.
-[[Special:Contributions/129.82.31.18|129.82.31.18]] ([[User talk:129.82.31.18|talk]]) 20:20, 11 November 2011 (UTC)
-== Tyche announced? ==
-Full Results of the WISE survey were released on March 14th, 2012. So have they found Tyche yet?--[[Special:Contributions/98.183.187.27|98.183.187.27]] ([[User talk:98.183.187.27|talk]]) 17:53, 18 March 2012 (UTC)
-:No. Tyche probably does not exist. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 18:33, 18 March 2012 (UTC)
-Won't it take years though, to analyze all of the data? [[Special:Contributions/70.166.85.174|70.166.85.174]] ([[User talk:70.166.85.174|talk]]) 05:18, 2 August 2012 (UTC)
-Yes it's premature to say that it doesn't exist when much of the data hasn't been analyzed. [[Special:Contributions/184.183.173.20|184.183.173.20]] ([[User talk:184.183.173.20|talk]]) 16:47, 10 November 2012 (UTC)
-:All of the data has been looked at for obvious bright objects that would shift as a result of the [[parallax]] of the Earth moving from one side of its orbit to the other. So *IF* Tyche exists, it is likely on the low mass range of the estimates. So it is valid to say, "Tyche probably does not exist." -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 17:12, 10 November 2012 (UTC)
-::Or unless there are a couple of low-mass objects. Less likely as well, but possible. [[User:DiamondLattice|DiamondLattice]] ([[User talk:DiamondLattice|talk]]) 17:08, 3 September 2013 (UTC)
-== This is not trivia, please don't delete ==
-"
-Whitmire and Matese speculate that Tyche's orbit would lie at approximately 500 times Neptune's distance; equivalent to 15,000 AU (2.2×10^12 km) from the Sun, a little less than one quarter of a light year. This mean that if we use the fastest spaceship up-to-date New horizons probe, 44,537 miles per hour (71,675 km/h) [11] it would take many years(about > 3504 ) to travel."
-In this article it is for 2 reasons. 1) This is a hypothetical near unknown planet, the best "source" for "discovery" and cutting of if it exists or no for even most people are photos. When somebody made a photo of Earth from space it was a bigger "prove", that for many people calculations by  humans thousands years ago. So it show why it this so big and hard gap to made science work on Kuiper belt. 2) Any user "from internet" or "educational"/"newspaper editor" who have basic or no knowledge can use it to show distance comparison easily for most people on Earth(and many of them don't remember what is AU, or want to calculate this - the computers are to leave the brain calculation force for creative thinking).  <span style="font-size: smaller;" class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/89.68.103.25|89.68.103.25]] ([[User talk:89.68.103.25|talk]]) 13:44, 24 May 2012 (UTC)</span><!-- Template:Unsigned IP --> <!--Autosigned by SineBot-->
-:[http://answers.yahoo.com/question/index?qid=20080314172739AAZuusw Yahoo answers] in not a reliable source. The New Horizons ''trivia'' adds no value to the ''assumed'' orbit of this object. It can also mislead the casual reader into assuming that NH is traveling in the direction of Tyche even though if Tyche exists we do not know where it is. Is 3504 years, "many years"? This sentence is poorly worded and adds little value to the article. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 14:01, 24 May 2012 (UTC)
-== Gomes is not Tyche ==
-The [[Planets_beyond_Neptune#Kuiper_cliff|planet Gomes speculates about]] would not be Tyche because it would be too close to the Sun (1500AU) and would only be as massive as Neptune. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 18:46, 16 November 2012 (UTC)
-== Size ==
-The note says: "A cold hydrogen-rich gas giant slightly more massive than Jupiter (below about 1.6 M<sub>J</sub>) would be larger in volume than Jupiter, but for higher masses, degenerate pressure will cause the planet to shrink". Could anyone point to where the source says this? Figure 4 in the source does not quite seem to say this... --[[User:JorisvS|JorisvS]] ([[User talk:JorisvS|talk]]) 23:19, 8 January 2013 (UTC)
-:The [http://adsabs.harvard.edu/abs/2007ApJ...669.1279S reference] states {{earth mass|link=yes|500}} which is {{jupiter mass|link=yes|1.6}} since Jupiter is [http://nssdc.gsfc.nasa.gov/planetary/factsheet/jupiterfact.html 318 times] more massive than Earth. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 23:56, 8 January 2013 (UTC)
-::Thanks. --[[User:JorisvS|JorisvS]] ([[User talk:JorisvS|talk]]) 00:41, 9 January 2013 (UTC)
-== The graphic ==
-Why is the sun at the centre of Tyche's supposed orbit rather than at one of the focii? --[[Special:Contributions/46.208.111.212|46.208.111.212]] ([[User talk:46.208.111.212|talk]]) 07:45, 25 July 2013 (UTC)
-:There is no graphic describing Tyche's orbit. <b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 07:48, 25 July 2013 (UTC)
-:As is common, the reader is probably confusing the obsolete [[Nemesis (hypothetical star)]] (95000 AU from the Sun) with Tyche, a hypothetical planet much closer to the Sun (10000-15000AU). Many websites confuse these two very different theories. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 19:34, 11 September 2013 (UTC)
-== What happened to Tyche ==
-It is now approaching January 2014, and the page says Tyche to be found by this year's end. Has WISE been able to confirm Tyche's existence yet? --[[Special:Contributions/98.183.188.69|98.183.188.69]] ([[User talk:98.183.188.69|talk]]) 00:09, 29 December 2013 (UTC)
-:WISE data has not detected Tyche because Tyche probably does not exist. Most astronomers were NOT expecting to find a gas giant with several Jupiter masses near the inner Oort Cloud. -- [[User:Kheider|Kheider]] ([[User talk:Kheider|talk]]) 01:57, 29 December 2013 (UTC)
-::Regardless, he's right; if the WISE data has been collated, we need to update the article to reflect that. <b>[[User:Serendipodous|<font color="#00b">Serendi</font>]][[Special:Contributions/Serendipodous|<sup><font color="#b00">pod</font></sup>]]<font color="#00b">[[User talk: Serendipodous|ous]]</font></b> 11:04, 29 December 2013 (UTC)