10645 Brač, provisional designation , is a stony Eunomia
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.
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from the central region of the
asteroid belt, approximately 10 kilometers in diameter. It was discovered on 14 March 1999, by Croatian astronomer
Korado Korlević
Korado Korlević (born on 19 September 1958 in Poreč) is a Croatian teacher and prolific amateur astronomer, who ranks among the world's top 20 discoverers of minor planets. As of 2016, he is credited by the Minor Planet Center with the discover ...
at
Višnjan Observatory, and named after the Croatian island of
Brač.
Classification and orbit
The asteroid is a member of the
Eunomia family, a large group of
S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.2–3.1
AU once every 4 years and 4 months (1,583 days). Its orbit has an
eccentricity of 0.18 and an
inclination of 13
° with respect to the
ecliptic.
The 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 U.S.
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 effo ...
in 1962, extending the asteroid's
observation arc by 37 years prior to discovery.
Physical characteristics
In October 2014,
photometric observations by Italian astronomer
Silvano Casulli gave a rotational
lightcurve with a
period of hours and a brightness amplitude of 0.31 in
magnitude ().
Three weeks later, a second lightcurve was obtained at the U.S. Etscorn Campus Observatory in New Mexico, rendering a concurring period of with an identical variation in brightness ().
According to the survey carried out by NASA's space-based
Wide-field Infrared Survey Explorer with its subsequent
NEOWISE mission, the asteroid measures 10.3 kilometers in diameter and its surface has an
albedo of ,
while the ''Collaborative Asteroid Lightcurve Link'' assumes an albedo of 0.21 and calculates a diameter of 9.6 kilometers.
A large-scale survey by
Pan-STARRS (PS1) assigns an LS-type, an intermediary
spectral type between the common, stony S-types and the rather rare and reddish
L-type asteroid
L-type asteroids are relatively uncommon asteroids with a strongly reddish spectrum shortwards of 0.75 μm, and a featureless flat spectrum longwards of this. In comparison with the K-type asteroid, K-type, they exhibit a more reddish spectrum at ...
s.
Naming
This
minor planet was named after the Croatian island of
Brač, the largest Dalmatian island in the
Adriatic sea, and the place where the
Blaca hermitage Observatory is located.
The approved 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
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on 15 December 2005 ().
References
External links
Asteroid Lightcurve Database (LCDB) query form
)
Dictionary of Minor Planet Names Google books
– Observatoire de Genève, Raoul Behrend
– Minor Planet Center
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{{DEFAULTSORT:Brac
010645
Discoveries by Korado Korlević
Named minor planets
19990314