Pietro Angelo Secchi (June 18, 1818 – February 26, 1878) was an Italian astronomer. is the 169th day of the year (170th in leap years) in the Gregorian calendar. ... 1818 (MDCCCXVIII) is a common year starting on Thursday of the Gregorian calendar or a common year starting on Saturday of the 12-day slower Julian calendar. ... is the 57th day of the year in the Gregorian calendar. ... 1878 (MDCCCLXXVIII) was a common year starting on Tuesday (see link for calendar). ... An astronomer or astrophysicist is a person whose area of interest is astronomy or astrophysics. ...

Angelo Secchi

Image File history File links Download high resolution version (835x1148, 428 KB) Pietro Angelo Secchi (1818–1878), Italian astronomer. ... Image File history File links Download high resolution version (835x1148, 428 KB) Pietro Angelo Secchi (1818–1878), Italian astronomer. ...

Biography

Born in Reggio Emilia, Father Angelo Secchi spent his latter years in Rome, where he died in 1878. Country Italy Region Emilia-Romagna Province Reggio Emilia (RE) Mayor Graziano Delrio (from July 1, 2004) Elevation 58 m Area 231 km² Population  - Total 141,383  - Density 612/km² Time zone CET, UTC+1 Coordinates Gentilic Reggiani Dialing code 0522 Postal code 42100 Frazioni see list Patron San Prospero  - Day... Nickname: Motto: SPQR: Senatus Populusque Romanus Location of the city of Rome (yellow) within the Province of Rome (red) and region of Lazio (grey) Coordinates: Region Lazio Province Province of Rome Founded 21 April 753 BC Government  - Mayor Walter Veltroni Area  - City 1,285 km²  (580 sq mi)  - Urban 5... 1878 (MDCCCLXXVIII) was a common year starting on Tuesday (see link for calendar). ...

He was a pioneer of astronomical spectroscopy along with Joseph von Fraunhofer. At the age of 16, he entered the Jesuit Order, and later, at the age of 32, he became the director of the Vatican Observatory. Through his solar observations, he discovered the existence of solar spicules. He also discovered comet Secchi (C/1853 E1). In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... Joseph von Fraunhofer Joseph von Fraunhofer (March 6, 1787 – June 7, 1826) was a German physicist. ... The Society of Jesus (Latin: Societas Iesu), commonly known as the Jesuits, is a Roman Catholic religious order. ... The Vatican Observatory (Specola Vaticana) is the astronomical research and educational institution of the Holy See. ... A spicule is a dynamic jet of about 500km diameter on the Sun. ...

He drew one of the early maps of Mars in 1858, in which he called Syrtis Major the "Atlantic Canal". He thus anticipated Schiaparelli's use of the term canali, although Secchi's canals were not the long straight-line Martian canals of Schiaparelli and Lowell. Mars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. ... Year 1858 (MDCCCLVIII) was a common year starting on Friday (link will display the full calendar) of the Gregorian Calendar (or a common year starting on Wednesday of the 12-day slower Julian calendar). ... Syrtis Major is a dark spot (an albedo feature) located in the boundary between the northern lowlands and southern highlands of Mars. ... Giovanni Virginio Schiaparelli (March 14, 1835 – July 4, 1910) was an Italian astronomer. ... Map of Mars by Giovanni Schiaparelli. ... Percival Lowell (March 13, 1855 – November 12, 1916) was an author, mathematician, and esteemed astronomer who fueled speculation that there were canals on Mars, founded the Lowell Observatory in Flagstaff, Arizona, and formed the beginning of the work and theories that led to the discovery of Pluto 14 years after...

Of decisive importance for Secchi’s later achievements in the domain of meteorology was his close friendship with the celebrated hydrographer, meteorologist, author oceanographer and astronomer , Commander Matthew Fontaine Maury , the first superintendent of the "U. S. National Observatory" -- later called the United States Naval Observatory, -- who lived and worked in Washington. Secchi meet and studied under Cmdr. M. F. Maury in Washington for two years (1848-49) while Secchi and other Jesuits were refuges from Rome. // Meteorology (from Greek: μετέωρον, meteoron, high in the sky; and λόγος, logos, knowledge) is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting. ... Hydrography is the measurement of physical characteristics of waters and marginal land. ... Meteorology is the scientific study of the atmosphere that focuses on weather processes and forecasting. ... Authorship redirects here. ... Oceanography (from Ocean + Greek γράφειν = write), also called oceanology and marine science is the study of the earths oceans and their interlinked ecosystems and chemical and physical processes. ... An astronomer or astrophysicist is a person whose area of interest is astronomy or astrophysics. ... Matthew Fontaine Maury Matthew Fontaine Maury (January 14, 1806 – February 1, 1873), USN - American astronomer, astrophysicist, historian, oceanographer, meteorologist, cartographer, author, geologist, educator. ... Aerial view of USNO. The United States Naval Observatory (USNO) is one of the oldest scientific agencies in the United States. ...

To this friendship, through the medium of Angelo Secchi, Italy owed its first acquaintance with the epoch-making discoveries of the great American, whose valuable services in marine meteorology and navigation cannot be overrated. // Meteorology (from Greek: μετέωρον, meteoron, high in the sky; and λόγος, logos, knowledge) is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting. ... Table of geography, hydrography, and navigation, from the 1728 Cyclopaedia. ...

In later years Secchi dedicated to this friend, “as a token of our mutual friendship”, his work, Sui recenti progressi della Meteorologia (Rome, 1861), and on Maury’s death in 1873 Secchi gave Commander M. F. Maury an enduring memorial in a warm and touching necrology (cf. Bollettino meteorologico del Collegio Romano, X/II, Rome, 1873).

The Secchi crater on the Moon and a crater on Mars are named after him. Secchi also developed an oceanographic instrument, known as a Secchi disk. Secchi is a small lunar crater formation on the northwest edge of Mare Fecunditatis. ... This article is about Earths moon. ... Secchi disk pattern Created in 1865 by Pietro Angelo Secchi, the Secchi disk is a device used to measure water transparency in open waters of lakes, bays, and the ocean. ...

External links

• Angelo Secchi, S.J.
• Angelo Secchi - the Catholic Encyclopedia