William F. van Altena
- THE SOUTHERN PROPER MOTION PROGRAM. IV. THE SPM4 CATALOG
2011/04/30 by T. M. Girard, Terrence M. Girard, W. F. van Altena +19 · 6 citations
Physics and Astronomy · #Astrometry #Astronomy and Astrophysical Research #Celestial mechanics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Inertial frame of reference #Observatory #Photometry (optics) #Proper motion #Stars #Stellar, planetary, and galactic studies #astro-ph.GA