50-year Analysis of Jupiter's DAM Radio Sources
500 TeV gamma rays from Hercules X-1
500 to 3000 A Observations of the UX UMa Stars V3885 Sgr, RW Sex, and IX Vel
500 Years Since the Death of Bernard Perger. (Slovenian Title: Ob petstoletnici smrti Bernarda Pergerja)
5000 MHz flux densities and spectra for 325 small-diameter radio sources at low galactic latitudes
5000 MHz source counts at 105/sr.
5000 Web Students Later: Panacea or Curse?
50th anniversary of Dundee Astronomical Society
51 NEMAUSA
51 neue Veräderliche
51 Ophiuchi (B9.5 Ve) - A Be star in the class of Beta Pictoris stars?
51 Pegasi
51 Pegasi
51 Pegasi
51 Pegasi
51 Tauri and the Hyades Distance Modulus
511 keV annihilation radiation from the center of the Milky Way.
5145 Pholus Stellar Occultation Candidates: 1999-2005
52 Herculis (β 627)
52 neue Veräderliche