Paul G. Comba (1926 – April 5, 2017) was an

Italian-American Italian Americans ( it, italoamericani or ''italo-americani'', ) are Americans who have full or partial Italian ancestry. The largest concentrations of Italian Americans are in the urban Northeast and industrial Midwestern metropolitan areas, w ...

computer scientist A computer scientist is a person who is trained in the academic study of computer science. Computer scientists typically work on the theoretical side of computation, as opposed to the hardware side on which computer engineers mainly focus (al ...

, an

amateur astronomer Amateur astronomy is a hobby where participants enjoy observing or imaging celestial objects in the sky using the unaided eye, binoculars, or telescopes. Even though scientific research may not be their primary goal, some amateur astronomers m ...

and a prolific

discoverer of minor planets This is a list of minor-planet discoverers credited by the Minor Planet Center with the discovery of one or several minor planets (such as near-Earth and main-belt asteroids, Jupiter trojans and distant objects). , the discovery of 612,011 numb ...

. He was born in

Tunisia ) , image_map = Tunisia location (orthographic projection).svg , map_caption = Location of Tunisia in northern Africa , image_map2 = , capital = Tunis , largest_city = capital , ...

Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...

parents in 1926, and moved to

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

at a young age. Admitted to university studies at the age of 17, He attended the

University of Turin The University of Turin (Italian: ''Università degli Studi di Torino'', UNITO) is a public research university in the city of Turin, in the Piedmont region of Italy. It is one of the oldest universities in Europe and continues to play an impo ...

(1943–46). In 1946 he moved to the United States to attend

Bluffton College Bluffton University is a private Mennonite university in Bluffton, Ohio. It is accredited by the Higher Learning Commission, with four programs that have earned programmatic accreditation: dietetics, education, music, and social work. The unive ...

, from which he graduated in 1947. He then attended

Caltech The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasional ...

, and completed his Ph.D. work in mathematics in 1951 (the degree was conferred at commencement in 1952). In 1951 he moved to

Honolulu Honolulu (; ) is the capital and largest city of the U.S. state of Hawaii, which is in the Pacific Ocean. It is an unincorporated county seat of the consolidated City and County of Honolulu, situated along the southeast coast of the island ...

where he taught at the

University of Hawaii A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, th ...

until 1960. He then joined IBM as a software developer, and later as a member of the IBM Cambridge Scientific Center. There he worked in

Cryptography Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adver ...

, and also developed a multiplication algorithm for large numbers, which reduces the multiplication time to as little as 3% of the conventional algorithm. In 2003 he won the Leslie C. Peltier Award for his contribution to

astronomy Astronomy () is a natural science that studies astronomical object, celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and chronology of the Universe, evolution. Objects of interest ...

. He is the author of the Astronomical League's Asteroid Club Observing Guide, and was an active member of the Prescott Astronomy Club.

Prescott Observatory

After retirement in 1991, Comba moved to

Prescott, Arizona Prescott ( ) is a city in Yavapai County, Arizona, United States. According to the 2020 Census, the city's population was 45,827. The city is the county seat of Yavapai County. In 1864, Prescott was designated as the capital of the Arizona T ...

, where he built the Prescott Observatory ( obs. code:

684 __NOTOC__ Year 684 ( DCLXXXIV) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 684 for this year has been used since the early medieval period, when the Anno Domini calendar era ...

) There he specialized in discovering

asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

s and has been recognized for the discovery of 644 numbered objects as of September 2013. Refurbished in 2011, the observatory houses a PlaneWave CDK 24 inch telescope with two Takahashi wide field refractors in the dome. There is a dedicated

solar observatory A solar observatory is an observatory that specializes in monitoring the Sun. As such, they usually have one or more solar telescopes. The Einstein Tower was a solar observatory in the Albert Einstein Science Park in Potsdam, Germany. Solar o ...

that is equipped with a Lunt 152

solar telescope A solar telescope is a special purpose telescope used to observe the Sun. Solar telescopes usually detect light with wavelengths in, or not far outside, the visible spectrum. Obsolete names for Sun telescopes include heliograph and photoheliograph ...

. The observatory also has a nano lab for cosmology research that is currently equipped with a JEOL 5800LV SEM ( scanning electron microscope). Prescott Observatory is an active contributor for the webcast organization

SLOOH Slooh is a robotic telescope service that can be viewed live through a web browser. It was not the first robotic telescope, but it was the first that offered "live" viewing through a telescope via the web. Other online telescopes traditionally ...

which is the premiere webcast organization for live celestial events. The observatory is now owned and operated by Matt Francis.

List of discovered minor planets

References

{{DEFAULTSORT:Comba, Paul 1926 births 2017 deaths 20th-century American astronomers 21st-century American astronomers Discoverers of asteroids * Italian emigrants to the United States