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Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw images  |
Hyperion Feature Names |
 Jun 20 2005, 10:02 PM
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#1
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 Senior Member  Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23  |
I am trying to track down the location of Hyperion features listed on the Planetary Names website
http://planetarynames.wr.usgs.gov/jsp/Feat...=Stat&show=Orig I've been able to track down a map of Hyperion with some features names: http://www.etsimo.uniovi.es/solar/r/sat/hyperionmap.jpg but it doesn't have the crater called Helios. Even using the lat/lons on the feature list won't help since the craters the map does have don't correlate with the lat/lons for those crater in the list. Any help on trying to confirm the identities of these craters and identifying Helios would be helpful. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jun 20 2005, 11:37 PM
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#2
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Solar System Cartographer Group: Members Posts: 10265 Joined: 5-April 05 From: Canada Member No.: 227 |
Volcanopele... the USGS name list assumed a different (arbitrary) coordinate system as the rotation state was unknown at the time. But plot those names on a grid and you can see how they fall. Tayfun Ofer's map was made with the coordinate system I prepared from the Cornell. U. study on rotation (see Icarus Vol. 117), which gave Hyperion a slow long axis mode rotation with large-angle rapid precession, like Comet Halley's nucleus. Peter Thomas also has shape model based on this.
Ofer put the names on that map independently and omitted the name Helios. I believe it refers to the biggest crater seen well in Voyager images, and in these latest pics. The names were shown in the 1984 USGS annual gazetteeer of planetary nomenclature, open File Report 84-692, and in a paper by yours truly in Earth, Moon and Planets, v. 74, pp. 61-83, 1996. Phil (NOTE: edited heavily after I got back to my office and could look things up) -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jun 21 2005, 04:09 PM
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#3
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Just checking to see if I got this correct:
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jun 21 2005, 05:04 PM
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#4
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Solar System Cartographer Group: Members Posts: 10265 Joined: 5-April 05 From: Canada Member No.: 227 |
That's the one!
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Sep 28 2005, 05:29 PM
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#5
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Just a note that Peter Thomas' 1995 paper on the rotation, shape, and geology of Hyperion has Meri, Jarilo, and Bahloo identified, if anyone is try to figure out what features are which. Also note that my identification of Helios is incorrect (not mentioned in the article, but I thought I'd point that out myself).
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Sep 28 2005, 05:41 PM
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#6
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 Member Group: Members Posts: 106 Joined: 26-September 05 Member No.: 508 |
Volcanopele: I made that map 5 years ago, it is based on Phil Stooke's shape model and although I don't remember exactly I placed the names according to a figure in Peter Thomas' article, that's why it does not include Helios and lat-long may be different from IAU list.
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Sep 28 2005, 06:05 PM
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#7
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
QUOTE (Tayfun Öner @ Sep 28 2005, 10:41 AM) Volcanopele: I made that map 5 years ago, it is based on Phil Stooke's shape model and although I don't remember exactly I placed the names according to a figure in Peter Thomas' article, that's why it does not include Helios and lat-long may be different from IAU list.  No problems. The coordinate system is no longer good anyway for our purpose... What may need to be done is to just accept some arbitrary coordinate system and stick with that for mapping purposes. Definitely will still require a good shape model. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Sep 28 2005, 06:17 PM
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#8
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 Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
Sharper Hyperion Features:
-------------------- - blue_scape / Nico -
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