Comparison of Hipparcos Proper-Motion System to the FK5

Abstract

The authors present an intensive analysis of the FK5 proper-motion system via the two large astrographic catalogs, the Positions and Proper Motions (PPM) catalog and the Astrographic Catalog Reference Stars (ACRS), compared with the Hipparcos proper motions. Regional, magnitude, and color-dependent systematic errors in the PPM and ACRS proper motions are found, and similar tendencies are exhibited in both catalogs. The term of the global rotation between the FK5 and Hipparcos proper-motion systems cannot be explained by the constant of the FK5 precessional correction, which is given by the Very Long Baseline Interferometry (VLBI) and Lunar Laser Ranging (LLR) observations. Comparing the Hipparcos proper motions with those of the Southern Proper Motion (SPM) 2.0 Catalog, which provides absolute proper motions of objects measured directly relative to external galaxies, they found neither strong systematic nor large regional errors between the two systems.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2000
Accession Number
ADA435749

Entities

People

  • Wenjing Jin
  • Zi Zhu

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Astronomical Observatories
  • Catalogs
  • Consistency
  • Coordinate Systems
  • Equations
  • Errors
  • High Density
  • Information Operations
  • Measurement
  • Observation
  • Observatories
  • Orientation (Direction)
  • Rotation
  • Wide Angles

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Control Systems Engineering.
  • Geodesy

Technology Areas

  • Directed Energy
  • Space