Parallax
Phase angle
Phase defect
Phase effect
Phase error
Photographic astrometry
Baade-Wesselink method
Radial velocity
Radio astrometry
Relativistic aberration
Relaxation time
Sky noise
Solar constant
Space astrometry
Spectral index
Standard stars
Stellar distance
Syzygy
Astronomical techniques
Two-colour diagrams
Two-color diagrams
Bolometric correction
Wolf diagram
Brightness temperature
Astrometric exoplanet detection
Stellar aberration
Distance measure
Effective temperature
Equator position
Fundamental parameters of stars
The precise measurement of the positions and motions of astronomical objects.
Astrometry
Astronomical coordinate systems
Astronomical location
Magnitude