arxiv: 1508.04637 · v1 · pith:EERJVJUKnew · submitted 2015-08-19 · 🌌 astro-ph.IM

The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog (URAT1)

Norbert Zacharias , Charlie Finch , John Subasavage , Greg Bredthauer , Chris Crockett , Mike DiVittorio , Erik Ferguson , Fred Harris

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Hugh Harris Arne Henden Chris Kilian Jeff Munn Ted Rafferty Al Rhodes Mike Schultheiss Trudy Tilleman Gary Wieder

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classification 🌌 astro-ph.IM

keywords catalogdataastrometricmassmillionobjectstypicallyurat1

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URAT1 is an observational, astrometric catalog covering most of the Dec >= -15 deg area and a magnitude range of about R = 3 to 18.5. Accurate positions (typically 10 to 30 mas standard error) are given for over 228 million objects at a mean epoch around 2013.5. For the over 188 million objects matched with the 2MASS point source catalog proper motions (typically 5 to 7 mas/yr std. errors) are provided. These data are supplemented by 2MASS and APASS photometry. Observations, reductions and catalog construction are described together with results from external data verifications. The catalog data are served by CDS, Starsbourg (I/329). There is no DVD release.

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The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog (URAT1)

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