Robert Grant Aitken (December 31, 1864 – October 29, 1951) was an American

astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...

Early life and education

Robert Grant Aitken was born in

Jackson, California Jackson (formerly, Botilleas, Botilleas Spring, Bottileas, Bottle Spring, and Botellas) is a city in and the county seat of Amador County, California. Its population was 4,651 at the 2010 census, up from 3,989 at the 2000 census. The city is acc ...

, to Scottish immigrant Robert Aitken and Wilhelmina Depinau. Aitken attended

Williams College Williams College is a private liberal arts college in Williamstown, Massachusetts. It was established as a men's college in 1793 with funds from the estate of Ephraim Williams, a colonist from the Province of Massachusetts Bay who was kill ...

Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...

and graduated with an undergraduate degree in 1887.

Career

From 1887–1891, he worked as a mathematics instructor at Livermore, California, then received his M.A. from Williams College in 1892. He became a professor of mathematics at the College of the Pacific, another liberal arts school. He was offered an assistant astronomer position at Lick Observatory in

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

in 1895. He began a systematically study of double stars, measuring their positions and calculating their orbits around one another. From 1899, in collaboration with W. J. Hussey, he methodically created a very large catalog of such stars. This ongoing work was published in Lick Observatory bulletins. In 1905, Hussey left and Aitken pressed on with the survey alone, and by 1915, he had discovered roughly 3,100 new binary stars, in addition to the 1,300 discovered by Hussey. The results were published in 1932 and entitled ''New General Catalogue of Double Stars Within 120° of the North Pole'', with the orbit information enabling astronomers to calculate stellar mass statistics for a large number of stars. For his work in cataloguing binary stars, he was awarded the prestigious

Bruce Medal The Catherine Wolfe Bruce Gold Medal is awarded every year by the Astronomical Society of the Pacific for outstanding lifetime contributions to astronomy. It is named after Catherine Wolfe Bruce, an American patroness of astronomy, and was fi ...

in 1926. During his career, Aitken measured positions and computed orbits for

comet A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena ...

s and

natural satellite A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Natural satellites are often colloquially referred to as ''moons'' ...

s of

planet A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a you ...

s. In 1908 he joined an eclipse expedition to

Flint Island Flint Island is an uninhabited coral island in the central Pacific Ocean, part of the Southern Line Islands under the jurisdiction of Kiribati. In 2014 the Kiribati government established a exclusion zone around each of the southern Line ...

in the central

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ...

. His book ''Binary Stars'' was published in 1918, with a second edition published in 1935. After joining the Astronomical Society of the Pacific in 1894, Aitken was elected to serve as president in 1899 and 1915 of the Astronomical Society of the Pacific. From 1898 to 1942, Aitken was an editor of the Publications of the Astronomical Society of the Pacific. In 1932, he delivered the Darwin Lecture before the Royal Astronomical Society, where he was an associate member. From 1918 to 1928, he was chair of the double star committee for the

International Astronomical Union The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreac ...

Personal life

Aitken was partly

deaf Deafness has varying definitions in cultural and medical contexts. In medical contexts, the meaning of deafness is hearing loss that precludes a person from understanding spoken language, an audiological condition. In this context it is written ...

and used a

hearing aid A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations. Small audio amplifiers s ...

. He married Jessie Thomas around 1888; they had three sons and one daughter. Jessie died in 1943. Their son

Robert Thomas Aitken Robert Thomas Aitken (June 13, 1890 – June 22, 1977) was an American anthropologist known for his work in Oceania while at the Bishop Museum in Hawaiʻi. Biography Born in Livermore, California, in 1890, Aitken was raised and educated wi ...

was an anthropologist who studied Pacific island cultures. Their grandson,

Robert Baker Aitken Robert Baker Dairyu Chotan Aitken Rōshi (June 19, 1917 – August 5, 2010) was a Zen teacher in the Harada-Yasutani lineage. He co-founded the Honolulu Diamond Sangha in 1959 together with his wife, Anne Hopkins Aitken. Aitken received Dharma ...

, was a widely known

Zen Zen ( zh, t=禪, p=Chán; ja, text= 禅, translit=zen; ko, text=선, translit=Seon; vi, text=Thiền) is a school of Mahayana Buddhism that originated in China during the Tang dynasty, known as the Chan School (''Chánzong'' 禪宗), and ...

Buddhist Buddhism ( , ), also known as Buddha Dharma and Dharmavinaya (), is an Indian religion or philosophical tradition based on teachings attributed to the Buddha. It originated in northern India as a -movement in the 5th century BCE, and ...

teacher and author. Their granddaughter Marjorie J. Vold was a noted chemist specializing in

colloids A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a liquid, while others extend ...

Honors

;Awards *

Lalande Prize The Lalande Prize (French: ''Prix Lalande'' also known as Lalande Medal) was an award for scientific advances in astronomy, given from 1802 until 1970 by the French Academy of Sciences. The prize was endowed by astronomer Jérôme Lalande in 180 ...

of the French Academy (1906, with William Hussey) *

(1926) *

Gold Medal of the Royal Astronomical Society The Gold Medal of the Royal Astronomical Society is the highest award given by the Royal Astronomical Society (RAS). The RAS Council have "complete freedom as to the grounds on which it is awarded" and it can be awarded for any reason. Past awar ...

(1932) *

Rittenhouse Medal The Rittenhouse Medal is awarded by the Rittenhouse Astronomical Society for outstanding achievement in the science of Astronomy. The medal was one of those originally minted to commemorate the Bi-Centenary of the birth of David Rittenhouse on April ...

(1934) * Honorary Sc.D. from College of the Pacific, Williams College,

University of Arizona The University of Arizona (Arizona, U of A, UArizona, or UA) is a public land-grant research university in Tucson, Arizona. Founded in 1885 by the 13th Arizona Territorial Legislature, it was the first university in the Arizona Territory. T ...

, and an honorary LL.D. from the

University of California The University of California (UC) is a public land-grant research university system in the U.S. state of California. The system is composed of the campuses at Berkeley, Davis, Irvine, Los Angeles, Merced, Riverside, San Diego, San Franci ...

;Named after him * Minor planet 3070 Aitken * Lunar crater '' Aitken'', part of the very large

South Pole-Aitken basin South is one of the cardinal directions or compass points. The direction is the opposite of north and is perpendicular to both east and west. Etymology The word ''south'' comes from Old English ''sūþ'', from earlier Proto-Germanic ''*sunþaz ...

* Aitken supercomputer at NASA Ames Research Center, Moffett Field, CA

References

External links

Bruce Medal page

Biographical Memoir (1958) by Van Den Bos at the National academy of Sciences

Double Star Observer, Cataloguer, Statistician, and Observatory Director

Additional Photos from the Emilio Segre Visual Archive, American Institute of Physics

Portrait of Robert G. Aitken from the Lick Observatory Records Digital Archive, UC Santa Cruz Library's Digital Collections

Digital version of ''The Binary Stars'' published by Dover in 1964

WikiTree: Robert Grant Aitken
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Obituaries

(one paragraph)

(in French)

{{DEFAULTSORT:Aitken, Robert Grant 1864 births 1951 deaths American astronomers Lick Observatory Williams College alumni Recipients of the Bruce Medal Recipients of the Gold Medal of the Royal Astronomical Society People from Jackson, California Members of the United States National Academy of Sciences Recipients of the Lalande Prize