O the longitude of Edinburgh Observatory
O the longitude of Fort S. Antonio, Valparaiso, and of Anhatomirim, Brazil
O the longitude of Madras
O the longitude of Port Louis Observatory
O the longitude of the Armagh observatory
O the longitude of the Observatory of Leyden
O the magnitude and colour of stars in the southern hemisphere
O the magnitudes of stars
O the mass of Jupiter
O the mass of Jupiter
O the mass of Jupiter
O the mass of Jupiter
O the mass of Uranus
O the mean distance, eccentricity, epoch, and longitude of the aphelion of the orbit of Venus
O the moon's equatorial horizontal parallax
O the mural circle of the Cape Observatory
O the N. polar distances of 60 stars from observations at Greenwich, by the two circles and 6 microscopes
O the Nature of the Gamma-Ray Bursts
O the node and inclination of the orbit of Venus
O the non-existence of 42 Virginis