The item comprises observations made as Madras Equatorial Observations of minor planet Harmonia of its observations taken in November and December 1861 by N.R. Pogson. Harmonia (minor planet designation: 40 Harmonia) is a giant main-belt asteroid discovered in 1856.

The item comprises observations made as Madras Equatorial Observations of the minor planet Ariadne. N.R. Pogson took these observations from Madras in 1861, 1863, 1864, and 1866. N.R. Pogson discovered this minor planet on 15 April 1857. Harmonia (minor planet designation: 40 Harmonia) is a giant main-belt asteroid.

The item comprises observations made as Madras Equatorial Observations of the 1882 comet; its observations were taken from September to November 1882 by N.R. Pogson. The Great Comet of 1882, formally designated C/1882 R1, 1882 II, and 1882b, was a comet that became very bright in September 1882.

The item comprises observations made as Madras Equatorial Observations of transit of Mercury occurred on the 11th and 12th of November 1861 by N.R. Pogson. The document contains observational data and critical notes about the astronomical event. Mercury's transit across the Sun occurs when the planet Mercury passes directly between the Sun and a superior planet.

The item comprises observations notes of the opposition of Mars taken from Madras Observatory by N. R.Pogson from September 22 to October 28 of 1862.

The item comprises observations notes of the separate results of Madras Meridian Circle Observation by N. R.Pogson in 1864 and 1875.

The item contains observation notes titled 'Madras zone reduced to' from 1825-1867 by N. R. Pogson. The documents have the observation notes of minor planets: Hestia, Sylvia, Sappho, Camilla, Iris, Ariadne, etc.

The item contains Madras equatorial observations of the occultation of the planet Saturn that occurred on 2 April 1866 by N. R. Pogson.

The item comprises of observations made as Madras equatorial Observations of minor planet Niope of its discovery and observation staken at several periods of time by N.R. Pogson.

The item comprises of observations made as Madras equatorial Observations of minor planet Clytia of its discovery and observation staken at several periods of time by N.R. Pogson.