223 Rosa

223 Rosa
Discovery
Discovered by	Johann Palisa
Discovery date	9 March 1882
Designations
MPC designation	(223) Rosa
Alternative designations	A887 BA, 1942 EL
Minor planet category	Main belt (Themis)
Orbital characteristics[1]
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	130.29 yr (47590 d)
Aphelion	3.45415 AU (516.733 Gm)
Perihelion	2.73689 AU (409.433 Gm)
Semi-major axis	3.09552 AU (463.083 Gm)
Eccentricity	0.11586
Orbital period	5.45 yr (1989.3 d)
Average orbital speed	16.94 km/s
Mean anomaly	309.511°
Mean motion	0° 10m 51.488s / day
Inclination	1.93552°
Longitude of ascending node	47.9276°
Argument of perihelion	61.7716°
Physical characteristics
Mean diameter	87.61±4.4 km
Rotation period	20.283 h (0.8451 d)
Geometric albedo	0.0309±0.003
Spectral type	CP
Absolute magnitude (H)	9.68,[1] 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 9 March 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 2 Yeomans, Donald K., "223 Rosa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
↑ 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.
↑ 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

Lightcurve plot of 223 Rosa, Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB), query form (info)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
223 Rosa at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
223 Rosa at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[JPL-1] 1 2 Yeomans, Donald K., "223 Rosa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.

[Warner2007-2] 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.

[Pilcher2012-3] 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.