Talk:Polydeuces (moon)
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[edit] pronunciation
Morford & Lenardon (Classical Mythology), Tripp (Meridian Handbook of Classical Mythology), Gayley (Classic Myths in English Literature and in Art), and Rbt Fagles (glossary of The Odyssey) are unanimous in giving the pronunciation of Polydeuces as pol'-i-dew'-seez. --kwami
From Liddell & Scott, it would seem the adjectival form is Polydeucean. kwami 2005 June 30 02:07 (UTC)
[edit] Norwegian info
Until we can get IAUC access... This web site seems to say S 5 and S 6 orbit between Tethys and Dione. Anyone speak norwegian?
« De nye oppdagelsene er månen S/2004 S 5 som går i bane i samme område som månene Tethys og Dione, omtrent 200 - 250 000 km fra planeten. Månen ble sett på bilder tatt over en periode på tre timer 21. oktober og igjen 2. november. Det er for få observasjoner til at det er mulig å beregne banen nøyaktig. Dersom S/2004 S 5 går i en nesten sirkulær bane over Saturns ekvator, kan den dele bane med Dione. S/2004 S 5 er omtrent 5 kilometer i diameter. »
Which translates into
- The new discoveries are the moon S/2004 S 5 which has an orbit in the same area/region as the moons Tethys and Dione, about 200 - 250 000 km from the planet. The moon was seen on images taken over a period of three hours 21. october and again 2. november. There are too few observations for it to be possible to calculate/compute the orbit accurately. If S/2004 S 5 has an almost circular orbit over Saturn's equator, it can/may/might share orbit with Dione. S/2004 S 5 is about 5 kilometres in diameter.
which is a rather "direct" translation of the Norwegian text. You might need to trim the language to make it better English. Some words don't translate directly so I have given alternatives which are all possible translations. I don't know why the first period uses plural ("The new discoveries are…") when the paragraph is only talking about one moon, but plural is used in the Norwegian text. –Peter J. Acklam 23:23, 26 Jan 2005 (UTC)
And this Czech web site seems to say S 5 was spotted on 21 October. Anyone speak Czech?
« 2004-10-21 Na snímcích byl zjištěn další pravděpodobný měsíc Saturnu o rozměru asi 5 km, zřejmě obíhacích na stejné dráze jako měsíc Dione (Saturn IV). Dostal předběžné označení S/2004 S 5. »
2004-10-21 on these images was discovered probably next Saturn's moon; the diameter is about 5 km. It runs on same orbit as moon Dione (Saturn IV).
Sorry for my English
Urhixidur 00:06, 2005 Jan 26 (UTC)
- I don't speak either, but a rough online translation of the page in Norwegian seems to say that the first images of Polydueces were taken October 21, with more images on November 2. It also says it's about 5 km in diameter, and on the orbital distance.. well, it's a bit hard to decipher 'as goes in bane in additions ambit as moon Tethys and Dione , approximately 200-250,000 km at the planet.' Tethys is 295,000 km, and Dione is 377,000. Your guess is as good as mine.
- The paragraph talking about 3 and 6 seemed more easy to interpret. It seems that S/2004 S6 is very near the F Ring, and may be a clump, just like S/2004 S3 and 4. As for a date, it only mentions October 21.
- Hope that helps, at least until someone who actually speaks one of those languages can translate better for us. :) --Patteroast 02:36, 26 Jan 2005 (UTC)
-
- The only thing I'll add is that the Norwegian page seems to be giving the orbital radii as altitudes above Saturn's cloud tops, so the 200-250 Mm range translates to about 260-310 Mm (which indeed lies roughly between Tethys and Dione).
- Urhixidur 04:46, 2005 Jan 26 (UTC)
- Translation: Another object is discovered on pictures and it is probably Saturn's moon with diameter 5km. Object has obviously the same orbit as moon Dione (Saturn IV). It got preliminary name S/2004 S 5. --195.70.159.228 22:22, 26 Jan 2005 (UTC)
Here's the paragraph that I got the information about S/2004 S6 from, on the same page in Norwegian as you cited above:
« I området der Saturns F-ring befinner seg er objektet kalt S/2004 S 6 oppdaget. Det sneier innerkanten av det tynne støvbåndet som omgir F-ringen. Funnet ble gjort på bilder tatt 28. oktober. Baneperioden og avstanden fra Saturn ser ut til å være veldig nær den samme som for S/2004 S 3. Måten S/2004 S 6 ble observert på kan imidlertid tyde på at det bare er en klump med støv og ikke en ordentlig måne. Det er til og med mulig, men ikke sannsynlig, at S/2004 S 6 og S/2004 S 4. Mengdene av observasjoner kan til tider virke forvirrende, men planlagte observasjoner vil avklare mange av usikkerhetene. Det ventes også at flere minimåner vil bli oppdaget i det samme området. »
--Patteroast 20:59, 26 Jan 2005 (UTC)
So, you're saying Polydeuces is a Dione co-orbital? I'll await confirmation before I change the articles again.
Urhixidur 22:40, 2005 Jan 26 (UTC)
[edit] Diameter of Polydeuces
Only source I've seen reporting Polydeuces' diameter being 13 km is Cassini's homepage [1]. Most pages have the value 3.5 km. The Saturnian Satellite Fact Sheet [2] gives it a radius of ~4 km (or a diameter of ~8 km). Question is, which of these is the correct value? --Jyril 15:37, 26 September 2005 (UTC)
- The paper announcing the discovery of Polydeuces, Porco et al. 2005, gave a diameter of 3.5 km. Imaging from earlier this week that resolves the disk of Polydeuces, supports this size. Volcanopele 17:43, 26 May 2006 (UTC)
[edit] Rotation
The article says it is synchronous. Is this known? Is there a reference? Sounds likely, but you never know. It was thought Mercury was synchronous for a long time. Deuar 21:27, 26 May 2006 (UTC)
