(223) Rosa

223 Rosa
Discovery
Discovered byJohann Palisa
Discovery date9 March 1882
Designations
(223) Rosa
A887 BA, 1942 EL
Main belt (Themis)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc130.29 yr (47590 d)
Aphelion3.45415 AU (516.733 Gm)
Perihelion2.73689 AU (409.433 Gm)
3.09552 AU (463.083 Gm)
Eccentricity0.11586
5.45 yr (1989.3 d)
16.94 km/s
309.511°
0° 10m 51.488s / day
Inclination1.93552°
47.9276°
61.7716°
Physical characteristics
Mean diameter
87.61±4.4 km
20.283 h (0.8451 d)
0.0309±0.003
CP
9.68,[1] 9.72[2]

Rosa (minor planet designation: 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. ^ a b Yeomans, Donald K., "223 Rosa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
  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.

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