Talk:Tethys (moon)

Density
Density of Tethys given at http://ssd.jpl.nasa.gov/sat_props.html is 1.006 (or 0.991 on their telnet HORIZONS System), everywhere else it's given as 1.21. Anyone have a clue? -- Looxix 22:59 May 5, 2003 (UTC)

I have notice the same thing as Looxix and came here and found his comment. The text of the article lists Tethy's density as 1.21 gm/cc and the table lists it as 0.99 gm/cc. The higher density correlates better with the densities of Dione and Rhea. Mike Emmert 19:39, 15 March 2006 (UTC) (Michael C. Emmert)

Pronunciation
There are two common English pronunciations. Robert Fagles in his translation of The Iliad, and the Oxford English Dictionary, have [TETH-iss], whereas NASA/JPL websites and JE Zimmerman's Dictionary of Classical Mythology (Harper & Row, 1964) have [TEETH-iss]. In either case the th is unvoiced, as in English teeth. kwami

Correction: Fagles might be a typo ("te'-this" is ambiguous). Three other mythological glossaries I've checked have tee'-this. Webster's Third does as well (for a genus of snail). The OED pronunciation teth'-is is for the Tethys Sea, which is the pronunciation I'm more familiar with. --kwami 09:26, 7 Apr 2005 (UTC)
 * The adjectival form is Tethyan (teth'-ee-un) per the OED. kwami 08:36, 2005 May 27 (UTC)

image
There's another nice image at that shows two of the large craters in high relief, and with the rings in the background to boot, in case anyone's interested in adding it. kwami 09:35, 29 November 2005 (UTC)

Spoken Wikipedia recording
I've just uploaded an audio recording of the article. Please let me know if I've mispronounced anything. :-) --Mangst (talk) 01:43, 15 January 2010 (UTC)

Density
We say, "Tethys has a low density of 0.98 g/cm³ indicating that it is made of water ice with just a small fraction of rock. The mass of rocky material can not exceed 6% of the mass of this moon."

Doesn't that assume no compression of the ice? — kwami (talk) 23:04, 5 November 2013 (UTC)


 * As I understand the given source, 6% would correspond to no compression ("For our standard mantle and core densities of 930 and 3000 kg m−3, Tethys has supported topography of 0.55, +0.79, −0.06 km. The core would constitute 0.06 of the satellite's mass and have a radius of 145 km."). With existing conpression, the rocky proportion would have to be smaller than 6% given the overall density, wouldn't it? --Roentgenium111 (talk) 22:08, 12 March 2014 (UTC)

maps
Polar maps also available for the past year. — kwami (talk) 09:49, 21 January 2014 (UTC)

External links modified
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External links modified (January 2018)
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Surface gravity
Did anybody else notice that in the infobox "surface gravity" is listed as "0 m/s²"? 212.186.0.174 (talk) 10:17, 12 July 2019 (UTC)
 * Fixed it: it was the result of this edit (probably accidental). Double sharp (talk) 12:38, 12 July 2019 (UTC)


 * Thank you. 212.186.0.174 (talk) 15:26, 12 July 2019 (UTC)