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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.
Names for 18 craters, 1 dorsum, 2 fossae, 3 labēs, 8 regiones, 2 rimae, and 2 rupēs have been approved on asteroid (21) Lutetia. For more information, see the Lutetia page in the Gazetteer of Planetary Nomenclature.
In late 2010, the coordinates of the named features in the Mercury portion of the nomenclature database were updated from values from historical sources to values in the preliminary MESSENGER control network. The purpose of this work was to facilitate the identification of named features on Mercury. Dots representing the coordinates of the centers of named features will fall in the centers of the features when displayed on any map product that was created using the same control network.
The extents and sizes of the 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.
This new set of coordinates was derived using ArcMap version 9.3.1 and the global map of Mercury. Because MESSENGER does not yet have global coverage of Mercury, Mariner 10 data were used to fill in areas where MESSENGER has not yet collected image data. In order for the two data sets to align, the preliminary MESSENGER control network was tied to the Mariner 10 map using several ground truth points.
The Mercury portion of the Gazetteer of Planetary Nomenclature web site now defaults to showing feature coordinates in the frame of the preliminary MESSENGER control network. The original ‘unknown’ source coordinates are still retained in the gazetteer, but this data set is now considered archival and will not be updated with new names or changes to approved names.
The name Tigre Valles has been approved for the Martian valley system located at 12S, 37W. For more information, see the database information and the map of MC-19 in the Gazetteer of Planetary Nomenclature.
The names Noord and Resen have been approved for two small Martian craters. For more information about these features, or about planetary feature names in general, see the Gazetteer of Planetary Nomenclature.
The name Majuro has been approved for the Martian crater located at 33.3S, 84.3E. For more information, see the database information and the map of MC-28 in the Gazetteer of Planetary Nomenclature.
The name Firsoff has been approved for the Martian crater located at 2.6N, 9.4W. For more information, see the database information and the map of MC-11 in the Gazetteer of Planetary Nomenclature.
The name Dogana has been approved for the Martian crater located at 10.0S, 306.35E. For more information, see the database information and the map of MC-18 in the Gazetteer of Planetary Nomenclature.
The name Canala has been approved for the Martian crater located at 24.35N, 80.0W. For more information, see the database information and the map of MC-10 in the Gazetteer of Planetary Nomenclature.
In October 2010, the coordinates of the named craters in the Martian portion of the nomenclature database were updated from values from the Mars Digital Image Mosaic (MDIM) 2.0 control network to values in the MDIM 2.1 control network. The purpose of this work is to facilitate the identification of named Martian craters. The locations of the craters in the KML and shapefiles will correspond to the crater locations on any map product that was created using the same MDIM 2.1 control network.
The extents and sizes of the named craters were also updated; these data are approximate and are intended solely to give the user sufficient information to identify the craters and their rough extents. A link to a more precise global crater database by Stuart Robbins will be provided when available.
This new set of coordinates was derived using ArcMap version 9.3.1 and the Mars Digial Image Mosaic 2.1. Some small craters are not resolved well in the MDIM 2.1 image; for these cases, feature coordinates were derived from the Thermal Emission Imaging System (THEMIS) Day IR 100m global mosaic. We would like to thank Stuart Robbins (University of Colorado, Boulder) for sharing a portion of his forthcoming global crater database, which provided a valuable and time-saving starting point for this work.
The Martian portion of the Gazetteer of Planetary Nomenclature now defaults to a new set of coordinates; the craters match MDIM 2.1, and the non-crater features are still in the MDIM 2.0 control network. The craters were updated first because they are the smallest features and therefore the mismatch between MDIM 2.0 and MDIM 2.1 was most obvious. Named non-crater features will be updated at a later date. The data set that contains all of the features in the MDIM 2.0 control network is still retained in the gazetteer, but is now considered archival and will not be updated with new names or changes to approved names.
