New Names for Mercury features |
New Names for Mercury features |
Apr 10 2008, 05:39 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
This is just the first of what will presumably be many new sets of names for features on Mercury produced by MESSENGER's imaging:
QUOTE Twelve New Names and a New Theme for Fossae Approved for Use on Mercury The following new names have been approved by the IAU for use on Mercury. Craters: Apollodorus, Atget, Cunningham, Eminescu, Kertész, Neruda, Raditladi, Sander, Sveinsdóttir, Xiao Zhao Rupes: Beagle Rupes Fossae: Pantheon Fossae The newly approved theme for fossae on Mercury is "Significant works of architecture." Beagle Rupes is the big curvy rupes near the western terminator on the outbound images. Pantheon Fossae is the "spider." Apollodorus is the crater that sits on the spider. Anyone care to try your hand at mapping out the locations of the other craters? They all seem to be on the outbound images, no surprise there. Name Lat Lon Diameter Raditladi 27.28 240.93 257 Xiao Zhao 10.64 236.21 23 Atget 25.65 193.93 100 Sander 42.59 205.6 50 Apollodorus 30.58 197.01 41 Sveinsdóttir -2.58 259.96 220 Eminescu 10.79 245.87 125 Cunningham 30.48 203.07 37 Kertész 27.44 214.06 33 Neruda -52.47 234.55 110 --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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May 4 2008, 10:30 PM
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#2
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
I've uploaded a segment extracted from my enhancement of the departure hemisphere color mosaic
Eminescu is a "middle aged" (sort of equivalent to Eartosthenian, on the Moon) crater with no particularly distinctive color/albedo patterns OTHER than the features surrounding the central peak-ring. The rim and outer floor of Eminescu are a little "yellower" in the enhancement than most of the surrounding cratered terrain, though the "blue" splattering from the young ray crater to the east, outside the high-rez frame, is an overlay of somewhat masking color-noise. In the general vicinity, crater floor and intercrater plains seem "yellower" than the old crater rims and rugged intercrater terrain, giving the plains a generally neutral color in this enhancement. To the northeast, outside the high-rez frame, some crater walls and patches on the plains have an interesting "pink" color that may be distinctive material (this area was missed by the ejecta). A large degraded crater almost as big as Eminescu, just south of the bright "blue" ray crater, seems to have an unusual "dark blue" central peak, but higher resolution data would be needed to confirm this is real. Another crater in the south part of the enhanced low-rez image has a "pink" central peak, again needing confirmation as a real feature. Patches of a "dark purple-blue" terrain appear near the south east corner of the low-rez frame and extend further south out of the cropped frame and appear to be a patchy regional unit in the rugged highlands there. But in general, beside near-terminator noise in the color data, the area around Eminescu (within about 3 crater diameters of it's rim) is largely devoid of prominant color variations. This makes the intense "blue" color of the bright materal in and around the central peaks extremely distinctive. The data suggests also that the dark patches on the crater floor that immediately surround the bright "blue" areas are also strongly "blue" colored. Higher resolution would help confirm this. A few other craters share this feature: most prominant is the impact basin with a prominent central ring that's to the north of Eminescu. Some of the impact craters within Caloris also have bright, bluish floors and maybe central peaks. One fairly young crater with weak ejecta rays well to the south of Eminescu also has a somewhat bright and blue central peak area. But overall, these features are very uncommon. "Curiouser and curiouser" said Alice" |
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