VizieR Online Data Catalog: PPMX Catalog of positions and proper motions (Roeser+ 2008)
Abstract
PPM-Extended (PPMX) is a catalogue of 18,088,919 stars containing astrometric and photometric information. Its limiting magnitude is about 15.2 in the GSC photometric system. PPMX consists of three parts: a) a survey complete down to RU=12.8 in the magnitude system of UCAC2; b) additional stars of high-precision proper motions, and c) all other stars from GSC 1.2 identified in 2MASS. The typical accuracy of the proper motions is 2mas/y for 66 percent of the survey stars (a) and the high-precision stars (b), and about 10mas/y for all other stars. PPMX contains photometric information from ASCC-2.5 and 2MASS.
(25 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- June 2008
- Bibcode:
- 2008yCat.1312....0R
- Keywords:
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- Positional data;
- Proper motions;
- Surveys