Title
Spin axis of (2953) Vysheslavia and its implications
Date Issued
01 January 2006
Access level
metadata only access
Resource Type
journal article
Author(s)
Vokrouhlický D.
Brož M.
Michałowski T.
Slivan S.M.
Šarounová L.
Velichko F.P.
Institut de Mécanique Céleste
Abstract
Photometric observations made during the years 2000-2005 are used to determine the pole orientation of (2953) Vysheslavia, a ≃15-km size member of the Koronis family. We find admissible solutions for ecliptic latitude and longitude of the rotation pole P3 : βp = -64° ± 10° and λp = 11° ± 8° or P4: βp = -68° ± 8° and λp = 192° ± 8°. These imply obliquity values γ = 154° ± 14° and γ = 157° ± 11°, respectively. The sidereal rotation period is Psid = 0.2622722 ± 0.0000018 day. This result is interesting for two reasons: (i) the obliquity value between 90° and 180° is consistent with a prediction done by Vokrouhlický et al. [Vokrouhlický, D., Brož, M., Farinella, P., Knežević, Z., 2001. Icarus 150, 78-93] that Vysheslavia might have been transported to its unstable orbit by the Yarkovsky effect, and (ii) with the obliquity close to 180°, Vysheslavia seems to belong to one of the two distinct groups in the Koronis family found recently by Slivan [Slivan, S.M., 2002. Nature 419, 49-51], further supporting the case of dichotomy in the spin axis distribution in this family. We also argue against the possibility that Vysheslavia reached its current orbit by a recent collisional breakup. © 2005 Elsevier Inc. All rights reserved.
Start page
217
End page
223
Volume
180
Issue
1
Language
English
OCDE Knowledge area
Astronomía
Scopus EID
2-s2.0-28844508926
Source
Icarus
ISSN of the container
00191035
Sponsor(s)
We are grateful to Anton Paschke and Luděk Vašta for their help during the observations taken at Saint Veran Observatory, Bill Holliday for providing us with his observations at the River Oaks Observatory, Richard Ditteon for providing us with his observations at the Oakley Observatory, and Rebecca Soule for help with observations at the Whitin Observatory. Bill Bottke suggested several improvements to the original manuscript, and Josef Ďurech had many comments and suggestions. This work has been supported by the Grant Agency of the Czech Republic, under the Grant No. 205/05/2737, and by the Polish KBN Grant 1 P03D 020 27.
Sources of information: Directorio de Producción Científica Scopus