Giuseppe Piazzi.

Giuseppe Piazzi (July 7, 1746 - July 22, 1826) was an Italian Theatine monk, mathematician, and astronomer. He was born in Ponte in Valtellina, and died in Naples. He established an observatory at Palermo, now the Osservatorio Astronomico di Palermo "Giuseppe S. Vaiana". Download high resolution version (696x885, 182 KB) This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ... Download high resolution version (696x885, 182 KB) This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ... July 7 is the 188th day of the year (189th in leap years) in the Gregorian Calendar, with 177 days remaining. ... // Events Catharine de Ricci (born 1522) canonized. ... July 22 is the 203rd day (204th in leap years) of the year in the Gregorian Calendar, with 162 days remaining. ... The oldest surviving photograph, Nicéphore Niépce, circa 1826 1826 (MDCCCXXVI) was a common year starting on Sunday (see link for calendar) of the Gregorian calendar (or a common year starting on Tuesday of the 12-day-slower Julian calendar). ... The Theatines or the Congregation of Clerks Regular of the Divine Providence are a male religious order of the Catholic Church, with the post-nominal initials C.R. // The order was founded by Saint Cajetan (Gaetano dei Conti di Tiene), Paolo Consiglieri, Bonifacio da Colle, and Giovanni Pietro Carafa (afterwards... Leonhard Euler is considered by many to be one of the greatest mathematicians of all time A mathematician is the person whose primary area of study and research is the field of mathematics. ... An astronomer or astrophysicist is a person whose area of interest is astronomy or astrophysics. ... Country Italy Region Lombardy Province Province of Sondrio (SO) Mayor Elevation 500 m Area 69. ... Naples panorama. ... For other uses, see Palermo (disambiguation). ...

On January 1, 1801, Piazzi discovered a stellar object that moved against the background of stars. At first he thought it was a fixed star, but once he noticed that it moved, he became convinced it was a planet, or as he called it, "a new star". January 1 is the first day of the calendar year in both the Julian and Gregorian calendars. ... The Union Jack, flag of the newly formed United Kingdom of Great Britain and Ireland. ... This article is about the astronomical object. ...

In his journal, he wrote: "The light was a little faint, and of the colour of Jupiter, but similar to many others which generally are reckoned of the eighth magnitude. Therefore I had no doubt of its being any other than a fixed star. In the evening of the second I repeated my observations, and having found that it did not correspond either in time or in distance from the zenith with the former observation, I began to entertain some doubts of its accuracy. I conceived afterwards a great suspicion that it might be a new star. The evening of the third, my suspicion was converted into certainty, being assured it was not a fixed star. Nevertheless before I made it known, I waited til the evening of the fourth, when I had the satisfaction to see it had moved at the same rate as on the preceding days." Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... // Headline text HEY!! HOW ARE YOU ALL?? Its nice of you to come read this page. ...

In spite of his assumption that it was a planet, he took the conservative route and announced it as a comet. In a letter to astronomer Barnaba Oriani of Milan he made his suspicions known in writing: Comet Hale-Bopp Comet McNaught as seen from Swifts Creek, Victoria, Australia on 23 January 2007 A comet is a small body in the solar system that orbits the Sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail â€” both primarily from the effects of... Barnaba Oriani. ... Milan (Italian: ; Lombard: Milán (listen)) is one of the biggest cities in Italy, located in the plains of Lombardy. ...

"I have announced this star as a comet, but since it is not accompanied by any nebulosity and, further, since its movement is so slow and rather uniform, it has occurred to me several times that it might be something better than a comet. But I have been careful not to advance this supposition to the public."

He was not able to observe it long enough as it was soon lost in the glare of the Sun. Unable to compute its orbit with existing methods, the renowned mathematician Carl Friedrich Gauss developed a new method of orbit calculation that allowed astronomers to locate it again. After its orbit was better determined, it was clear that Piazzi's assumption was correct and this object was not a comet but more like a small planet. Coincidentally, it was also almost exactly where the Titius-Bode law predicted a planet would be. The Sun is the star at the center of the Solar System. ... In physics, an orbit is the path that an object makes, around another object, whilst under the influence of a source of centripetal force, such as gravity. ...   (30 April 1777 – 23 February 1855) was a German mathematician and scientist of profound genius who contributed significantly to many fields, including number theory, analysis, differential geometry, geodesy, magnetism, astronomy and optics. ... The eight planets and three dwarf planets of the Solar System. ... The Titius-Bode law (or Bodes law) is the observation that orbits of planets in the solar system closely follow a simple geometric rule. ...

Piazzi named it "Ceres Ferdinandea", after the Roman and Sicilian goddess of grain and King Ferdinand IV of Naples and Sicily. The Ferdinandea part was later dropped for political reasons. Ceres turned out to be the first, and largest, of the asteroids existing within the Asteroid Belt. However, under the terms of a 2006 IAU resolution, Ceres can be called a dwarf planet. Roman mythology, the mythological beliefs of the people of Ancient Rome, can be considered as having two parts. ... In Roman mythology, Ceres was the goddess of growing plants (particularly cereals) and of motherly love. ... King Ferdinand I of the Two Sicilies (January 12, 1751 - January 4, 1825). ... Naples panorama. ... Sicily (Sicilia in Italian and Sicilian) is an autonomous region of Italy and the largest island in the Mediterranean Sea, with an area of 25,708 km² (9,926 sq. ... Spectral type: G Absolute magnitude: 3. ... 253 Mathilde, a C-type asteroid. ... For details on the physical properties of bodies in the asteroid belt see Asteroid and Main-belt comet. ... The 2006 definition of planet by the International Astronomical Union (IAU) states that, in the solar system, a planet is a celestial body that: is in orbit around the Sun, has sufficient mass so that it assumes a hydrostatic equilibrium (nearly round) shape, and has cleared the neighborhood around its... Artists impression of Pluto (background) and Charon (foreground). ...

In 1923, the 1000th asteroid to be numbered was named 1000 Piazzia in his honor. More recently, a large albedo feature, probably a crater, imaged by the Hubble Space Telescope on Ceres, has been informally named 'Piazzi'. {{year nav|1939 1923 (MCMXXIII) was a common year starting on Monday (link will display the full calendar). ... 1000 Piazzia is a minor planet orbiting the Sun. ... Albedo is the ratio of reflected to incident electromagnetic radiation power. ... Tycho crater on Earths moon. ... The Hubble Space Telescope (HST) is a telescope in orbit around the Earth, named after astronomer Edwin Hubble. ... Piazzi is a lunar crater that is located near the southwestern limb of the Moon, and is attached to the southeast rim of the Lagrange walled plain. ...

References

• Cunningham, C. J. (2001). The First Asteroid. Star Lab Press. ISBN 0-9708162-2-7. 

External links

• Catholic Encycopedia entry for Giuseppe Piazzi