Talk:Dysnomia (moon)

message: The content of this article is more or less a straight copy and paste from the main article.  There doesn't seem a whole lot of point in doing that, so I've changed it back to a redirect.  When so little is known about the moon anyway, it makes much more sense to discuss it in the main article.
:Natural satellites deserve own articles, but since there is so little information available (there's even been rumors that it isn't real after all), keeping the article only a redirect is justified.--Jyril 12:16, 6 May 2006 (UTC)
thread_title: redirect

message: "Xena"; "Ceres", "1 Ceres".
Hilarious & silly.
Miles O'Brien [ Miles_O%27Brien_%28journalist%29 ], cnn, speaking with Neil deGrasse Tyson, announced this mnemonic:
"My Very Educated Mother Just Sent Us Nine Pizzas,..."
"Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto,..."
"...'chovies eXtra."
Hopiakuta 20:43, 16 August 2006 (UTC)
thread_title: "[[Gabrielle_%28Xena%29]]"

message: Am I the only one that finds this choice of name ironic? Concidering that Xena was played by a Lucy Lawless? Perhaps... Hmm, did this maybe subconciously affect their decisions for the official name of the newly designated planet? -- Lucy (Not Lawless, just coincidence) 08:16, September 14, 2006 (UTC)
:You're not. The name is too obvious to be a pure coincidence.--JyriL talk 10:15, 14 September 2006 (UTC)
replies: text: I came to this discussion page to see if anyone had already mentioned this.  When I read the article it immediately dawned on me.  If it is a coincidence, it's eerie.  Maybe something about this should be put into the article? Hmm?  Dismas|(talk) 10:40, 14 September 2006 (UTC)
replies: text: It would be original research if the one who gave the name has not provably confirmed it.--JyriL talk 11:04, 14 September 2006 (UTC)

text: Hang on.  The dwarf planet is dischord.  The moon now called 'lawless' was nicknamed Gabrielle, the role played by Renée O'Connor.  --GwydionM 15:24, 14 September 2006 (UTC)

text: SkyTonight.com: The satellite, now called Dysnomia, is named for Eris's daughter, the goddess of lawlessness — a tribute, says Brown, to the actress who played Xena, Warrior Princess: Lucy Lawless. The name also referes to Brown's wife Diana (cf. Pluto's Charon / Charlene).  --JyriL talk 17:59, 14 September 2006 (UTC)

text: Bad Astronomy blog post on the naming Andjam 00:54, 17 September 2006 (UTC)
thread_title:  Dysnomia, Lawlessness? 

message: could someone fix the infobox? It's transparent..--TheFEARgod (listening) 20:43, 14 September 2006 (UTC)
thread_title:  fixing 

message: After all, "Dysnomia" has no historic claim to the name (an argument, IMO flawed, made with 134340 Pluto), and we do have a redirect already at Dysnomia for the rare user looking for this obscure body. --John Kenneth Fisher 22:24, 14 September 2006 (UTC)
replies: text: I oppose moving it there. None of the other moons in the solar system have such titles, and this one shouldn't have such at title either. Voortle 23:47, 14 September 2006 (UTC)

text: It's in exactly the same format as Nix (moon) and Hydra (moon), or for that matter Dactyl (moon) (which however leads off with the name (243) Ida I Dactyl).   That's just how we do it here at Wikipedia. :) RandomCritic 03:35, 15 September 2006 (UTC)
thread_title:  Should this not be at (136199) Eris I Dysnomia? 

message: No move Duja 10:44, 18 October 2006 (UTC)
replies: text: How so? Michaelbusch 14:46, 12 October 2006 (UTC)
replies: text: I would assume it's because the moon is commonly associated with Earth's natural satellite. I agree with the move, but weakly. --Wirbelwind 15:07, 12 October 2006 (UTC)

text: Aren't all the other natural satellites disambiguated by "(moon)"? Is there a reason why this particular body has been singled out? --Polaron | Talk 15:08, 12 October 2006 (UTC)
thread_title:  [[Dysnomia (moon)]] → [[Dysnomia (natural satellite)]] 

message: The article says, "the satellite was used to constrain the mass of Eris". What is the meaning of "constrain" in this sentence? Is is referring to constraint algorithms? Vsst 03:02, 15 July 2007 (UTC)
thread_title:  Constrain 

message: The text in Properties says "its diameter is estimated to be less than 150 km" and in the table it says "equatorial radius 175±75 km" (= equatorial diameter 350±150 km) - a clear misfit. So which is wrong ?  —Preceding unsigned comment added by Allgaeuer (talk • contribs) 23:42, 11 July 2008 (UTC)
thread_title:  Radius or diameter ? 

message: I can't access the ref for the 2ary pronunciation. Is it really "dice-nomia", or is the y just long in the nickname Dy? kwami (talk) 12:16, 29 September 2008 (UTC)
replies: text: I thought it would have been pronounced as "Dis-nomia" im probably wrong. Mr Deathbat (talk) 09:24, 29 January 2009 (UTC)
replies: text: I was later able to confirm it. Brown (mis)pronounces the name "dice-nomia" after his wife, as Christy pronounced Charon "sharon" after his. But I don't know that Brown's pronunciation is catching on, whereas Christy's pronunciation of Charon is perhaps the dominant one. kwami (talk) 09:37, 29 January 2009 (UTC)
thread_title:  pronunciation 

message: The adjective for Dysnomia is given as "Dysnomian". This is not referenced. Are adjectives for planets and moons decided by an Astronomy organisation, or are these adjectives taken from a particular dictionary ? --Franklin Demenge (talk) 18:07, 5 August 2009 (UTC)
replies: text: This is a Wikipedian thing that keeps cropping up on the planetary articles. It might be grammatically correct, but it's not a usage that appears in scientific articles on these objects. Plus, it looks downright painful on the non-Latin or Greek names, eg. "Teharonhiawakian"... There are some valid adjectives that have widespread usage in the field (see the list at planetary science), but they are few in number. Iridia (talk) 00:48, 6 August 2009 (UTC)
thread_title: Planetary adjectives

message: Is there any clue or hint on how the temperature on Dysnomia is?
Because I have to do a presentation about Trans Neptunian Objects for school and this is something I really need..  —Preceding unsigned comment added by 95.118.108.226 (talk) 00:08, 14 October 2009 (UTC)
replies: text: The only clue I can give you is that the temperature on Dysnomia is probably about the same as the temperature on Eris, somewhere around 40 kelvin. Trewal (talk) 18:41, 14 October 2009 (UTC)
thread_title: Temperature?

message: An IP editor added a line in the infobox for average orbital speed:
    | avg_speed = 0.172 km/s
Unfortunately it seems the reference 'calculated' is never defined, leading to a 'Cite error: The named reference calculated was invoked but never defined (see the help page).'. The information added looks like it could be right, but unfortunately I can find nowhere on the Internet a source for this. It looks like the anonymous editor calculated it from the other given orbital quantities. Is this something we do? Anon423 (talk) 16:59, 5 November 2014 (UTC)
replies: text: It's correct and very easily calculated. I've added the calculation in the note. --JorisvS (talk) 17:20, 5 November 2014 (UTC)
replies: text: Thanks a lot! How'd you get to this so fast? Anon423 (talk) 17:57, 5 November 2014 (UTC)
replies: text: Seeing it on my watchlist and a quick calculation was all it needed. --JorisvS (talk) 18:13, 5 November 2014 (UTC)
thread_title:  Reference for average orbital speed Comment Comment 

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thread_title:  External links modified 

message: This article mentions Michael Brown's claim that Dysnomia is fairly small. He's since changed his mind, and this paper should be cited and used to modify the properties section: https://arxiv.org/abs/1801.07221 134340Goat (talk) 02:23, 23 January 2018 (UTC)
thread_title:  New paper by Brown on Dysnomia (and Vanth) 

message: Do we know whether Dysnomia is or could be in hydrostatic equilibrium, rounded by its gravity? This image shows a spherical Dysnomia. 212.186.7.232 (talk) 13:10, 27 April 2019 (UTC)
replies: text: No. Very little is known about it. The size you see here is shaky, based on several model assumptions. They don't even have high confidence that they even actually detected Dysnomia in the data used. (Not implying there's anything wrong with it, just that nature has a habit of smashing our nice models to dust.) And if you could nail down the size, it's still in the range (Dysnomia in 300-800 km) where they don't know the likelihood of it being HE. Tbayboy (talk) 16:04, 27 April 2019 (UTC)
replies: text: One should send a spacecraft to the Eris system. Eris is the only planet which hasn't been visited by a probe as yet, due to its distance and its late discovery. NASA will have an occasion to launch a probe in 2026, they could call it 'New Horizons II' like they did with the Voyager probes. Perhaps also the Webb telescope will give us more precise images of planet Eris and its moon. 212.186.7.232 (talk) 18:29, 27 April 2019 (UTC)
replies: text: Well, given that we now know it managed to tidally lock its parent (so Eris–Dysnomia are mutually tidally locked just like Pluto–Charon), the answer appears to be "yes, it's almost certainly dense enough to be gravitationally rounded". Double sharp (talk) 01:41, 18 November 2022 (UTC)
replies: text: How do you conclude that D is in HE from it being tidally locked? AFAICT the density [assuming the underlying assumptions are justified] only indicates that it's a solid body. Still, it's probably more-or-less round regardless. — kwami (talk) 04:17, 18 November 2022 (UTC)
replies: text:  I don't conclude that it's in HE, just that it's solid (though yeah, I should've been clearer). "Gravitationally rounded" seems vague enough to be accurate, since many Saturnian moons are round enough while not being in HE, and we already use it to title List of gravitationally rounded objects of the Solar System. (Besides, everybody includes Tethys as a planemo moon anyway, even though there's some doubt about it being solid.) Double sharp (talk) 14:58, 18 November 2022 (UTC)
thread_title:  Irregular or spheroid