526 Jena
53 Aurigae revisited: a B9Mn + F0m composite spectrum
53 Volumes of Astronomy and Astrophysics Abstracts: Interesting Statistics
532 Herculina
532 Herculina, A Differentiated Asteroid with Two Maria
532 Herculina, a Spherical Asteroid with Two Dark Regions
53Mn-53Cr Chronometry of Cb Chondrite: Evidence for Uniform Distribution of 53Mn in the Early Solar System
5424 Covington = 1983 TN1
546 precise astrometric positions of minor planets obtained at the GPO telescope of ESO - La Silla.
55 ma: Separation of a spectroscopic triple system
55 New Compact Groups in the Southern Sky from an Automated Search
55 UMa spectroscopic orbit (Horn+, 1996)
55Fe in Supernova 1987A
56Ni Model for Type I Supernovae
57.5 MHz observations of extended nonthermal sources in the galactic plane
58 X 62 InSb focal plane array for infrared astronomy
58Fe and 54Cr in Early Solar System Materials
58Ni(p,gamma )59Cu total cross section measurements.
59 Cyg - A Second Be Binary with a Hot, Compact Companion
59 Cyg - A second Be binary with a hot, compact companion