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Study of the Plutino Object (208996) 2003 AZ84 from Stellar Occultations: Size, Shape, and Topographic Features
Dias-Oliveira A., Sicardy B., Ortiz J.L., Braga-Ribas F., Leiva R., Vieira-Martins R., Benedetti-Rossi G., Camargo J.I.B., Assafin M., Gomes-Junior A.R., Baug T., Chandrasekhar T., Desmars J., Duffard R., Santos-Sanz P., Ergang Z., Ganesh S., Ikari Y., Irawati P., Jain J., Liying Z., Richichi A., Shengbang Q., Behrend R., Benkhaldoun Z., Brosch N., Daassou A., Frappa E., Gal-Yam A., Garcia-Lozano R., Gillon M., Jehin E., Kaspi S., Klotz A., Lecacheux J., Mahasena P., Manfroid J., Manulis I., Maury A., Mohan V., Morales N., Ofek E., Rinner C., Sharma A., Sposetti S., Tanga P., Thirouin A., Vachier F., Widemann T., Asai A., Hayato W., Hiroyuki W., Owada M., Yamamura H., Hayamizu T., Bradshaw J., Kerr S., Tomioka H., Andersson S., Dangl G., Haymes T., Naves R., Wortmann G.
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2017. The American Astronomical Society. All rights reserved..We present results derived from four stellar occultations by the plutino object (208996) 2003 AZ84, detected on 2011 January 8 (single-chord event), 2012 February 3 (multi-chord), 2013 December 2 (single-chord), and 2014 November 15 (multi-chord). Our observations rule out an oblate spheroid solution for 2003 AZ84’s shape. Instead, assuming hydrostatic equilibrium, we find that a Jacobi triaxial solution with semiaxes km can better account for all our occultation observations. Combining these dimensions with the rotation period of the body (6.75 hr) and the amplitude of its rotation light curve, we derive a density g cm-3, a geometric albedo . A grazing chord observed during the 2014 occultation reveals a topographic feature along 2003 AZ84’s limb, which can be interpreted as an abrupt chasm of width ∼23 km and depth km, or a smooth depression of width ∼80 km and depth ∼13 km (or an intermediate feature between those two extremes).[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Kuiper belt objects: individual (208996, 2003AZ84),occultations,planets and satellites: fundamental parameters,planets and satellites: surfaces[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.3847/1538-3881/aa74e9[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]