The Observatory, Volume 123; Volume 123

absolute magnitude absorption accretion disc amplitude asteroids Astronomical Society Astrophysical atmosphere Cambridge Coravel Claim of sighting cluster colour comets components cosmology dark matter density disc discussion dust eclipse emission error evolution extinction galactic galaxies hardbound Haute-Provence Henry Draper Catalogue Hipparcos images interesting interstellar interstellar medium ISBN light curves luminosity magnetic field magnitude mass measurements missions models Moon nebula objects Observatory obtained optical orbital elements orbital period paper parameters periastron phase photometric physics planetary planets plasma polarization present Price primary Professor programme pulsation R. F. Griffin radial velocities Radial-velocity observations radial-velocity traces recent reconnection redshift region rotation secondary solar space spectra spectral type spectroscopic binary spectrum star formation stellar structure supernova surface Table telescope temperature tion topics University variable variation Velocity km WMAP X-ray XMM-Newton