Photometric observations and modelling of the asteroid 85 Io in conjunction with data from an occultation event during the 1995-96 apparition

A. Erikson*, J. Berthier, P. V. Denchev, A. W. Harris, Z. Ioannou, A. Kryszczynska, C. I. Lagerkvist, P. Magnusson, T. Michalowski, A. Nathues, J. Piironen, P. Pravec, L. Šarounová, F. Velichko

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

6 اقتباسات (Scopus)

ملخص

The asteroid 85 Io has been observed using CCD and photoelectric photometry on 18 nights during its 1995-96 and 1997 apparitions. We present the observed lightcurves, determined colour indices and modelling of the asteroid spin vector and shape. The colour indices (U-B = 0.35±0.02, B-V = 0.66±0.02, V-R = 0.34±0.02, R-I = 0.36±0.02) are as expected for a C-type asteroid. The allowed spin vector solutions have the pole co-ordinates λ0 = 285±4°, β0 = -52±9° or λ0 = 108±10°, β0 = -46±10° and λ0 = 290±10°, β0 = -16±10° with a retrograde sense of rotation and a sidereal period Psid = 0d.286463±0d.000001. During the 1995-96 apparition the International Occultation Time Association (IOTA) observed an occultation event by 85 Io. The observations and modelling presented here were analysed together with the occultation data to develop improved constraints on the size of the asteroid. The derived value of 164 km is about 5% larger than the IRAS diameter.

اللغة الأصليةEnglish
الصفحات (من إلى)327-330
عدد الصفحات4
دوريةPlanetary and Space Science
مستوى الصوت47
رقم الإصدار3-4
المعرِّفات الرقمية للأشياء
حالة النشرPublished - 1999
منشور خارجيًانعم

ASJC Scopus subject areas

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  • ???subjectarea.asjc.1900.1912???

بصمة

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