223 Rosa

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223 Rosa
Discovered by Johann Palisa
Discovery date March 9, 1882
Alternative names A887 BA, 1942 EL
Minor planet category Main belt (Themis)
Orbital characteristics[1]
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 519.792 Gm (3.475 AU)
Perihelion 405.399 Gm (2.71 AU)
Semi-major axis 462.596 Gm (3.092 AU)
Eccentricity 0.124
Orbital period 1986.115 d (5.44 a)
Average orbital speed 16.94 km/s
Mean anomaly 273.279°
Inclination 1.94°
Longitude of ascending node 48.359°
Argument of perihelion 57.875°
Physical characteristics
Dimensions 88.0 km
Spectral type CP
Absolute magnitude (H) 9.72[2]

223 Rosa is a large Themistian asteroid. It is classified as a combination of C-type and P-type asteroids, so it is probably composed of carbonaceous material rich in water ice. It was discovered by Johann Palisa on March 9, 1882 in Vienna. The origin of the name is not known.

Photometric observations made in 2011–2012 at the Organ Mesa Observatory in Las Cruces, New Mexico produced a light curve with a period of 20.283 ± 0.002 hours and a brightness variation of 0.13 ± 0.02 in magnitude. The curve has two asymmetrical maxima and minima per 20.283 hour cycle.[3]


  1. ^ Yeomans, Donald K., "223 Rosa", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25. 
  2. ^ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34: 113–119, Bibcode:2007MPBu...34..113W. 
  3. ^ Pilcher, Frederick (July 2012), "Rotation Period Determinations for 46 Hestia, 223 Rosa, 225 Henrietta, 266 Aline, 750 Oskar, and 765 Mattiaca", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 39 (3): 171–173, Bibcode:2012MPBu...39..171P. 

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