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.

223 Rosa
Animation of JUICE around the Sun
  Sun ·   Earth ·   JUICE ·   Venus ·   223 Rosa ·   Jupiter
Discovery
Discovered byJohann Palisa
Discovery date9 March 1882
Designations
(223) Rosa
A882 EA, 1887 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
82.7±8.4 km[2]
Mass(5.979±2.971)×1017 kg[2]
Mean density
1.790±50% g/cm3[2]
20.283 h (0.8451 d)
0.0309±0.003
CP
9.68,[1] 9.72[3]

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.[4]

A flyby of Rosa by the JUICE spacecraft, which is planned to pass through the asteroid belt twice, was proposed to occur on 15 October 2029.[2] However, the mission team ultimately decided against the proposed flyby to maximize fuel for the primary mission.[5]

References

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  1. ^ a b Yeomans, Donald K., "223 Rosa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
  2. ^ a b c d Avdellidou, C.; Pajola, M.; Lucchetti, A.; Agostini, L.; Delbo, M.; Mazzotta Epifani, E.; Bourdelle De Micas, J.; Devogèle, M.; Fornasier, S.; Van Belle, G.; Bruot, N.; Dotto, E.; Ieva, S.; Cremonese, G.; Palumbo, P. (2021). "Characterisation of the main belt asteroid (223) Rosa". Astronomy & Astrophysics. 656: L18. Bibcode:2021A&A...656L..18A. doi:10.1051/0004-6361/202142600. S2CID 244753425.
  3. ^ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
  4. ^ 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, vol. 39, no. 3, pp. 171–173, Bibcode:2012MPBu...39..171P.
  5. ^ European Space Agency [@ESA_JUICE] (14 December 2023). "🧃 Time for another visit to the #ESAJuice bar 😉 At 8% of the way to Jupiter, we have an update on our journey. We had been considering slightly diverting Juice to visit an asteroid en route to #Jupiter. To maximise fuel for our main mission (the tour around the gas giant and its icy moons), we have decided against this asteroid flyby" (Tweet) – via Twitter.
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