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Lunar Coordinates Now Available in ULCN 2005

Monday, October 18, 2010

In 2010, the coordinates of the named features in the lunar portion of the nomenclature database were updated from values from historical sources to values in the coordinate frame of the Unified Lunar Control Network 2005 (ULCN 2005, see The purpose of this work was to facilitate the identification of named lunar features. 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 ULCN 2005 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. A link to a more precise crater database (now in preparation) by Dr. Nadine Barlow will be provided when available.

This new set of coordinates was derived using ArcMap version 9.3.1 and the Lunar Orbiter Digital Photographic Mosaic ( Where data gaps exist in the Lunar Orbiter image, the features were aligned with the USGS airbrushed shaded relief mosaic, which was warped to the same control network as the Lunar Orbiter mosaic (ULCN 2005) (see

The lunar portion of the Gazetteer of Planetary Nomenclature web site now defaults to showing feature coordinates in the frame of the ULCN 2005 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.

Large Ringed Feature on Titan Named Paxsi

Friday, October 15, 2010

A large ringed feature on Titan located at 5.0N, 341.2W has been named Paxsi. For more information, see the feature page and the image of Titan in the Gazetteer of Planetary Nomenclature.

Research Geologist Position

Thursday, October 14, 2010

  • Are you a recent PhD graduate in planetary science looking for a research opportunity?
  • Do you have a passion for planetary geology?
  • Do you want to be part of an important aspect of ground breaking research in planetary science?

If you answered "yes" to these questions, then this is the job for you! Come join the USGS and start doing the job you've always dreamed of!

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IT Specialist Positions Available

Thursday, October 14, 2010

Come join the USGS Astrogeology Science Center in Flagstaff, Arizona and start doing the job you've always dreamed of! Help to grow our high performance computing datacenter for processing digital images from planetary spacecraft missions including the Mars Exploration Rovers, Mars Reconnaissance Orbiter, & Lunar Reconnaissance Orbiter. Our Linux-based servers and compute clusters provide raw processing power to 80+ employees. We have two 50+ CPU compute clusters, along with 400+ terabytes of disk storage capacity.

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