223 Rosa

223 Rosa

Discovery
Discovered by	Johann Palisa
Discovery date	March 9, 1882
Designations
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]

References

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", The Minor Planet Bulletin 34, pp. 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", The Minor Planet Bulletin 39 (3), pp. 171–173, Bibcode:2012MPBu...39..171P.

External links

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• 223 Rosa at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters