5333 Kanaya, provisional designation , is a carbonaceous

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. ...

from the inner regions of the asteroid belt, approximately 14 kilometers in diameter. The asteroid was discovered on 18 October 1990, by Japanese astronomers

Makio Akiyama is a Japanese astronomer affiliated with the Susono Observatory (886). He is a discoverer of minor planets, credited by the Minor Planet Center with the discovery of 16 numbered minor planets during 1989–1999. In 1992 he discovered the aster ...

and

Toshimasa Furuta is a Japanese astronomer. He is a prolific discoverer of 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 ...

at Mishima Observatory () in Susono, Japan, and named for the Japanese city of Kanaya.

Orbit and classification

''Kanaya'' orbits the Sun in the

inner Interior may refer to: Arts and media * ''Interior'' (Degas) (also known as ''The Rape''), painting by Edgar Degas * ''Interior'' (play), 1895 play by Belgian playwright Maurice Maeterlinck * ''The Interior'' (novel), by Lisa See * Interior de ...

main-belt at a distance of 2.0–2.7 AU once every 3 years and 7 months (1,312 days). Its orbit has an eccentricity of 0.17 and an inclination of 11 ° with respect to the ecliptic. A first

precovery In astronomy, precovery (short for pre-discovery recovery) is the process of finding the image of an object in images or photographic plates predating its discovery, typically for the purpose of calculating a more accurate orbit. This happens mos ...

was taken at the

Goethe Link Observatory The Goethe Link Observatory, observatory code 760, is an astronomical observatory near Brooklyn, Indiana, United States. It is owned by Indiana University and operated by the Indiana Astronomical Society https://iasindy.org/about.html, which eff ...

in 1954. It observation arc begins at the Chilean Cerro El Roble Station in 1974, when it was identified as , 16 years prior to its official discovery observation at Susono.

Physical characteristics

In the

SMASS classification An asteroid spectral type is assigned to asteroids based on their emission spectrum, color, and sometimes albedo. These types are thought to correspond to an asteroid's surface composition. For small bodies that are not internally differentiat ...

, ''Kanaya'' is a Ch-type asteroid, a hydrated sub-type of the carbonaceous C-type asteroids.

Diameter and albedo

According to the space-based surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, ''Kanaya'' measures 14.2 and 13.6 kilometers in diameter, and its surface has an albedo of 0.029 and 0.051, respectively. The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 13.4 kilometers with an absolute magnitude of 13.1.

Lightcurves

Several rotational lightcurves of ''Kanaya'' have been obtained from photometric observations. In December 2005, a first lightcurve by astronomer David Higgins at Hunters Hill Observatory (), Australia, gave a

rotation period The rotation period of a celestial object (e.g., star, gas giant, planet, moon, asteroid) may refer to its sidereal rotation period, i.e. the time that the object takes to complete a single revolution around its axis of rotation relative to the ...

of hours with a brightness variation of 0.22 magnitude (). In October 2010, Czech astronomer Petr Pravec obtained another well-defined period of hours with an amplitude of 0.16 magnitude (). Other observations rendered similar periods ().

Naming

This minor planet was named for the Japanese town of Kanaya (金谷町 Kanaya-chō) in Haibara District of the Shizuoka Prefecture. It is the native town of the first discoverer, Makio Akiyama, and also a station on the ancient "Tokai-do" road. The Malinohara plateau south of Kanaya is well known for its production of green tea. The official naming citation was published by the

Minor Planet Center The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory. Function ...

on 6 February 1993 ().

Notes

References

External links

Pravec, P.; Wolf, M.; Sarounova, L. (2010)

Asteroid Lightcurve Database (LCDB)
query form

)
Dictionary of Minor Planet Names
Google books

– Observatoire de Genève, Raoul Behrend

– Minor Planet Center * * {{DEFAULTSORT:Kanaya 005333 Discoveries by Makio Akiyama Discoveries by Toshimasa Furuta Named minor planets 005333 19901018