Richard "Rick" P. Binzel (born 1958) is an American

astronomer An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galax ...

and professor of

planetary science Planetary science (or more rarely, planetology) is the scientific study of planets (including Earth), celestial bodies (such as moons, asteroids, comets) and planetary systems (in particular those of the Solar System) and the processes of ...

s at the

Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a Private university, private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of moder ...

(MIT). He is a discoverer of minor planets, photometrist and the inventor of the

Torino Scale The Torino scale is a method for categorizing the impact hazard associated with near-Earth objects (NEOs) such as asteroids and comets. It is intended as a communication tool for astronomers and the public to assess the seriousness of collision p ...

, a method for categorizing the impact hazard associated with

near-Earth object A near-Earth object (NEO) is any small Solar System body orbiting the Sun whose closest approach to the Sun ( perihelion) is less than 1.3 times the Earth–Sun distance (astronomical unit, AU). This definition applies to the object's orbit a ...

s such as

asteroid An asteroid is a minor planet—an object larger than a meteoroid that is neither a planet nor an identified comet—that orbits within the Solar System#Inner Solar System, inner Solar System or is co-orbital with Jupiter (Trojan asteroids). As ...

s and

comet A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, gravitationally unbound atmosphere or Coma (cometary), coma surrounding ...

s. He is also a frequent trip leader for the MIT Alumni Association.

Biography and honors

Binzel was awarded the H. C. Urey Prize by the

American Astronomical Society The American Astronomical Society (AAS, sometimes spoken as "double-A-S") is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC. The primary objective of the AAS is to promote the adv ...

in 1991. He also was awarded a "MacVicar Faculty Fellowship" for teaching excellence at MIT in 1994. He is a co-investigator on the

OSIRIS-REx OSIRIS-REx was a NASA asteroid-study and sample-return mission that visited and collected samples from 101955 Bennu, a C-type asteroid, carbonaceous near-Earth object, near-Earth asteroid. The material, returned in September 2023, is expected ...

mission. Binzel was on the "Planet Definition Committee" that developed the proposal to the

International Astronomical Union The International Astronomical Union (IAU; , UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and developmen ...

's meeting in

Prague Prague ( ; ) is the capital and List of cities and towns in the Czech Republic, largest city of the Czech Republic and the historical capital of Bohemia. Prague, located on the Vltava River, has a population of about 1.4 million, while its P ...

in 2006 on whether

Pluto Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of Trans-Neptunian object, bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Su ...

should be considered a

planet A planet is a large, Hydrostatic equilibrium, rounded Astronomical object, astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The Solar System has eight planets b ...

. Their proposal was revised during the meeting and

is now considered a

dwarf planet A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be hydrostatic equilibrium, gravitationally rounded, but insufficient to achieve clearing the neighbourhood, orbital dominance like the ...

. However, Richard Binzel has strong feelings contrary to this collective decision and would prefer for Pluto to still be classified as having full planet status. Binzel is an editor of the books ''Seventy-five years of Hirayama asteroid families : the role of collisions in the Solar System history'' and ''Asteroids II'' . He is General Editor of th
University of Arizona Space Science Series
Richard Binzel assists his family in raising

guide dog Guide dogs (colloquially known in the US as seeing-eye dogs) are assistance dogs trained to lead people who are blind or visually impaired around obstacles. Although dogs can be trained to navigate various obstacles, they are red–green c ...

puppies for Guiding Eyes for the Blind. His favorite dog was their fourth, Skyler. He is also a frequent leader with the MIT Alumni Association. The main-belt asteroid 2873 Binzel, discovered by

Edward Bowell Edward L. G. "Ted" Bowell (born 1943 in London, died August 21 2023 in Flagstaff, Arizona), was an American astronomer. Bowell was educated at Emanuel School London, University College, London, and the University of Paris. He was principal invest ...

at Anderson Mesa Station, was named in his honor.

References

{{DEFAULTSORT:Binzel, Richard P. 1958 births 20th-century American astronomers Discoverers of asteroids * Living people Massachusetts Institute of Technology School of Science faculty American planetary scientists

Biography and honors

See also

References