2021A&A...656L..18A


Query : 2021A&A...656L..18A

2021A&A...656L..18A - Astronomy and Astrophysics, volume 656, L18-18 (2021/12-1)

Characterisation of the main belt asteroid (223) Rosa. A proposed flyby target of ESA's JUICE mission.

AVDELLIDOU C., PAJOLA M., LUCCHETTI A., AGOSTINI L., DELBO M., MAZZOTTA EPIFANI E., BOURDELLE DE MICAS J., DEVOGELE M., FORNASIER S., VAN BELLE G., BRUOT N., DOTTO E., IEVA S., CREMONESE G. and PALUMBO P.

Abstract (from CDS):


Context. The ESA JUICE space mission, on its way to study Jupiter's environment and icy moons, will pass twice through the main asteroid belt. For this reason, the possibility to perform an asteroid flyby has been investigated.
Aims. We aim to gain insight into the physical properties of the outer main belt asteroid (223) Rosa, which has been proposed as a potential JUICE flyby target.
Methods. We report new visible and near-infrared spectroscopic observations at different rotation phases. Additionally, we perform a literature review of all the available physical properties, such as diameter, albedo, mass, and rotational period.
Results. We find that asteroid Rosa is an X-type asteroid that shows no significant spectral variability combining the new and literature spectroscopic data. Its large size and orbital semimajor axis in the outer main belt indicate that Rosa does not belong to the Themis family, while its albedo is only marginally compatible with the family. Rosa's estimated density is in agreement with those of other low-albedo X-type asteroids. Hence, we propose that Rosa is a planetesimal that accreted in the protoplanetary disk beyond the snow line.

Abstract Copyright: © C. Avdellidou et al. 2021

Journal keyword(s): minor planets, asteroids: individual: (223) Rosa - techniques: spectroscopic - catalogs - virtual observatory tools

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 11532 PM* 01 53 18.3712838400 +00 22 23.275841628   10.36 9.71     G8III/IV 74 1
2 * 64 Cet PM* 02 11 21.0787585632 +08 34 11.305868808   6.189 5.623 6.81   G0IV 117 0
3 BD+09 445 * 03 30 17.3062690968 +10 18 00.534373452   11.39 10.78     G5 4 0
4 BD-00 4557 PM* 23 42 41.8259946456 +00 45 13.139398080 10.411 10.305 9.693 9.339 8.991 F8 61 0

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2023.01.27-19:40:19

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