Reference : Stellar Occultations by Large TNOs on 2012: The February 3rd by (208996) 2003 AZ84, a...
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/142603
Stellar Occultations by Large TNOs on 2012: The February 3rd by (208996) 2003 AZ84, and the February 17th by (50000) Quaoar
English
Braga Ribas, Felipe [Observatoire de Paris-Meudon / LESIA, France]
Sicardy, B. [Observatoire de Paris-Meudon / LESIA, France]
Ortiz, J. L. [Instituto de Astrofisica de Andalucia, CSIC, Spain]
Duffard, R. [Instituto de Astrofisica de Andalucia, CSIC, Spain]
Camargo, J. I. B. [Observatorio Nacional / MCTI, Brazil]
Lecacheux, J. [Observatoire de Paris-Meudon / LESIA, France]
Colas, F. [Observatoire de Paris-Meudon / IMCCE, France]
Vachier, F. [Observatoire de Paris-Meudon / IMCCE, France]
Tanga, P. [Observatoire de la Cote d'Azur, France]
Sposetti, S. [Gnosca Observatory, Switzerland]
Brosch, N. [Wise Observatory, Tel Aviv University, Israel]
Kaspi, S. [Wise Observatory, Tel Aviv University, Israel]
Manulis, I. [Weizmann Institute of Science, Israel]
Baug, T. [Physical Research Laboratory, India]
Chandrasekhar, T. [Physical Research Laboratory, India]
Ganesh, S. [Physical Research Laboratory, India]
Jain, J. [Physical Research Laboratory, India]
Mohan, V. [IUCAA Girawali Observatory, India]
Sharma, A. [Nikaya Observatory, India]
Garcia-Lozano, R. [Observatorio de Busot, Spain]
Klotz, A. [Universite de Toulouse, UPS-OMP, IRAP, France]
Frappa, E. [EURASTER, 1bis cours Jovin Bouchard, 42000, France]
Jehin, Emmanuel mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Assafin, M. [Observatorio do Valongo / UFRJ, Brazil]
Vieira Martins, R. [Observatorio Nacional / MCTI, Brazil]
Behrend, R. [Observatoire de Geneve, Switzerland]
Roques, F. [Observatoire de Paris-Meudon / LESIA, France]
Widemann, T. [Observatoire de Paris-Meudon / LESIA, France]
Morales, N. [Instituto de Astrofísica de Andalucía, CSIC, Spain]
Thirouin, A. [Instituto de Astrofísica de Andalucía, CSIC, Spain]
Mahasena, P. [Observatorium Bosscha, Institut Teknologi Bandung, Indonesia]
Benkhaldoun, Z. [Oukaimeden Observatory, LPHEA, Cadi Ayyad University, Morocco]
Daassou, A. [Oukaimeden Observatory, LPHEA, Cadi Ayyad University, Morocco]
Rinner, C. [Moroccan Oukaimeden Sky Survey, Morocco]
Ofek, E. O. [Weizmann Institute of Science, Israel)]
1-Oct-2012
AAS/Division for Planetary Sciences Meeting Abstracts
No
No
International
DPS 44th annual meeting of the Division for Planetary Sciences of the American Astronomical Society
du 14 au 19 octobre 2012
Reno
USA
[en] On February 2012, two stellar occultation's by large Trans-neptunian Objects (TNO's) were observed by our group. On the 3rd, an event by (208996) 2003 AZ84 was recorded from Mont Abu Observatory and IUCAA Girawali Observatory in India and from Weizmann Observatory in Israel. On the 17th, a stellar occultation by (50000) Quaoar was observed from south France and Switzerland. Both occultations are the second observed by our group for each object, and will be used to improve the results obtained on the previous events. The occultation by 2003 AZ84 is the first multi-chord event recorded for this object. From the single chord event on January 8th 2011, Braga-Ribas et al. 2011 obtained a lower limit of 573 +/- 21 km. From the 2012 occultation the longest chord has a size of 662 +/- 50 km. The other chords will permit to determine the size and shape of the TNO, and derive other physical parameters, such as the geometric albedo. The Quaoar occultation was observed from south of France (Observatoire de la Côte d'Azur, TAROT telescope and Valensole) and from Gnosca, Switzerland. Unfortunately, all three sites in France are almost at the same Quaoar's latitude, so in practice, we have two chords that can be used to fit Quaoar's limb. The resulting fit will be compared with the results obtained by Braga-Ribas et al. 2011. Braga-Ribas F., Sicardy B., et al. 2011, EPSC-DPS2011, 1060.Ribas F., Sicardy B., et al. 2011, EPSC-DPS2011, 1060.
Researchers
http://hdl.handle.net/2268/142603
http://adsabs.harvard.edu/abs/2012DPS....4440201B

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