Rosa ( minor planet designation: 223 Rosa) is a large

Themistian asteroid The Themis family (''adj. Themistian''; ) is a family of carbonaceous asteroids located in the outer portion of the asteroid belt, at a mean distance of 3.13 AU from the Sun. It is one of the largest families with over 4700 known members, and co ...

. It is classified as a combination of C-type and P-type asteroids, so it is probably composed of

carbon Carbon () is a chemical element with the symbol C and atomic number 6. It is nonmetallic and tetravalent—its atom making four electrons available to form covalent chemical bonds. It belongs to group 14 of the periodic table. Carbon mak ...

aceous material rich in water ice. It was discovered by Johann Palisa on 9 March 1882, in

Vienna en, Viennese , iso_code = AT-9 , registration_plate = W , postal_code_type = Postal code , postal_code = , timezone = CET , utc_offset = +1 , timezone_DST ...

. The origin of the name is not known. Photometric observations made in 2011–2012 at the Organ Mesa Observatory in

Las Cruces, New Mexico Las Cruces (; "the crosses") is the second-largest city in the U.S. state of New Mexico and the seat of Doña Ana County. As of the 2020 census the population was 111,385. Las Cruces is the largest city in both Doña Ana County and southern Ne ...

, produced a

light curve In astronomy, a light curve is a graph of light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y axis and with time on the x axis. The light is usually in a particular frequ ...

with a period of 20.283 ± 0.002 hours and a brightness variation of 0.13 ± 0.02 in

magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...

. The curve has two asymmetrical maxima and minima per 20.283-hour cycle. The spacecraft

JUICE Juice is a drink made from the extraction or pressing of the natural liquid contained in fruit and vegetables. It can also refer to liquids that are flavored with concentrate or other biological food sources, such as meat or seafood, such as ...

is planned to pass through the asteroid belt twice, and a flyby of 223 Rosa has been proposed. If selected, JUICE would make its nearest approach on 15 October 2029. Animation of JUICE around Sun

References

External links

Lightcurve plot of 223 Rosa
Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB)
query form

)
Dictionary of Minor Planet Names
Google books

– Observatoire de Genève, Raoul Behrend

– Minor Planet Center * * 000223 Discoveries by Johann Palisa Named minor planets 000223 18820309 {{C-beltasteroid-stub