USGS Astrogeology Science Center Nomenclature News http://astrogeology.usgs.gov/news News about current and upcoming space missions, USGS gelogic products and historical exhibits en-us <![CDATA[Coordinates of Named Lunar Features Now Available in LOLA Reference Frame]]> Mon, 04 Jun 2012 00:00:00 -0700 In 2012, coordinates of the named features in the lunar portion of the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN) Gazetteer of Planetary Nomenclature were updated. Previous coordinates were based on maps using the Unified Lunar Control Network (ULCN) 2005 coordinate reference frame. The new coordinates are derived from maps made in the Lunar Reconnaissance Orbiter (LRO) Lunar Orbiter Laser Altimeter (LOLA) coordinate reference frame. These reference frames are referred to the mean Earth/polar axis reference coordinate system for the Moon. The updated coordinates will facilitate the identification of named lunar features on images derived from LOLA topography. Dots representing the center coordinates of named features should fall in the centers of the features when displayed on any map product based on the LOLA reference frame.

The extents and sizes of named features were also updated; these data are approximate and are intended solely to give the user sufficient information to identify named features and their rough extents. A link to a more precise lunar crater database (now in preparation) by Dr. Nadine Barlow will be provided when available.

This new set of coordinates was derived using ArcMap version 10.0 as a display tool, a lunar hillshade image based on LOLA topography (LDEM_128.jp2, 128 pixels/degree or 237 m/pixel, released December 2011, http://pds-geosciences.wustl.edu/missions/lro/lola.htm), and a LRO Wide Angle Camera (WAC) image mosaic (released November 2011, http://wms.lroc.asu.edu/lroc/global_product/100_mpp_global_bw). Feature boundaries were determined using both images, but the features were aligned to the LOLA hillshade image where there were slight discrepancies.

The lunar portion of the Gazetteer of Planetary Nomenclature web site now displays feature coordinates in the LOLA reference frame. The original coordinates (from unknown sources) and the ULCN 2005 coordinates are retained in the gazetteer and can be viewed by gazetteer users by selecting the desired coordinate set from a dropdown menu on the feature pages. The “Unknown” and ULCN 2005 coordinates are now considered archival and will not be updated with new names or changes to approved names.

]]>
<![CDATA[Three New Names Approved for Features on Mars]]> Wed, 16 May 2012 00:00:00 -0700 The IAU Working Group for Planetary System Nomenclature has approved the names Aeolis Mons, Aeolis Palus, and Robert Sharp. For more information, see the maps of MC-22 and MC-23 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[First Names Approved for Asteroid (2867) Steins]]> Fri, 11 May 2012 00:00:00 -0700 The Working Group for Planetary System Nomenclature has approved names for 23 craters and one regio on asteroid (2867) Steins. For details, see the list of Steins feature names and the image of Steins in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[New Names for 23 Craters on Mercury]]> Tue, 24 Apr 2012 00:00:00 -0700 The Working Group for Planetary System Nomenclature has approved 23 new names for craters on Mercury. For details, see the list of Mercury feature names and the images of Mercury in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Small Lunar Crater Named Lev]]> Thu, 29 Mar 2012 00:00:00 -0700 The IAU Working Group for Planetary System Nomenclature has approved the name Lev for the small lunar crater located at 12.7N, 62.2E. For more information, see the map of LAC 62 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Martian Crater Named Keren]]> Wed, 28 Mar 2012 00:00:00 -0700 The IAU Working Group for Planetary System Nomenclature has approved the name Keren for the Martian crater located at 20.98N, 337.5E. For more information, see the map of MC-11 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Martian Crater Named Domoni]]> Wed, 07 Mar 2012 00:00:00 -0700 The IAU Working Group for Planetary System Nomenclature has approved the name Domoni for the Martian crater located at 51.38N, 234.39E. For more information, see the map of MC-2 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Mercury Crater Named Stieglitz]]> Tue, 28 Feb 2012 00:00:00 -0700 The name Stieglitz has been approved for a crater on Mercury. For more information, see the map of Mercury quadrangle H-1 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[New Names for 21 Craters on Vesta]]> Tue, 28 Feb 2012 00:00:00 -0700 The Working Group for Planetary System Nomenclature has approved 21 new names for craters on Vesta. For details, see the list of Vesta feature names and the image of Vesta in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Two Craters on Mars Named Baucau and Arima]]> Wed, 22 Feb 2012 00:00:00 -0700 The names Arima and Baucau have been approved for craters on Mars. For more information, see the map of Mars quadrangle MC-18 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[New Name Approved for Martian Fossae]]> Mon, 23 Jan 2012 07:35:00 -0700 The name Sinai Fossae has been approved for the Martian fossae located at 14.0S, 281.0E. For more information, see the gazetteer page for Sinai Fossae and the map of MC-18 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Names Approved for Three Terrae and Two Regions on Titan]]> Thu, 05 Jan 2012 09:26:00 -0700 The IAU Working Group for Planetary System Nomenclature has approved names for three terrae (Garotman, Tollan, and Yalaing Terrae) and two regiones (Concordia and Hetpet Regiones) on Titan. For details, see the list of Titan feature names in theGazetteer of Planetary Nomenclature.

]]>
<![CDATA[New Name Approved for Martian Vallis]]> Tue, 03 Jan 2012 08:33:00 -0700 The name Havel Vallis has been approved for the Martian vallis located at 1.0N, 302.5E. For more information, see the web page for Havel Vallis and the map of MC-10 in the Gazetteer of Planetary Nomenclature.

]]>
<![CDATA[Fourteen More Names Approved for Surface Features on Vesta]]> Tue, 27 Dec 2011 09:10:00 -0700 The Working Group for Planetary System Nomenclature has approved names for seven craters, two fossae, one tholus, one terra, one planitia, and two rup─ôs on Vesta. For details, see thelist of Vesta feature names and the image of Vesta in theGazetteer of Planetary Nomenclature. Coordinates for these names are in a system used by the Dawn Team.

]]>
<![CDATA[Two New Names Approved for Craters on Titan]]> Fri, 23 Dec 2011 09:54:00 -0700 The names Hano and Momoy have been approved for craters on Titan. For more information, see the Titan page in the Gazetteer of Planetary Nomenclature.

]]>