Talk:Tethys (moon)

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Density[edit]

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)[reply]

Pronunciation[edit]

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[edit]

There's another nice image at [1] 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)[reply]

Spoken Wikipedia recording[edit]

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)[reply]

Density[edit]

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)[reply]

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)[reply]

maps[edit]

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

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Surface gravity[edit]

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)[reply]

Fixed it: it was the result of this edit (probably accidental). Double sharp (talk) 12:38, 12 July 2019 (UTC)[reply]
Thank you. 212.186.0.174 (talk) 15:26, 12 July 2019 (UTC)[reply]
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