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Proceedings of GAIA-FUN-SSO 2014 Third “Gaia Follow-up Network for Solar System Objects” Workshop held at IMCCE/Paris Observatory 2014, November 24 – 26 Institut de mécanique céleste et de calcul des éphémérides Observatoire de Paris Legal Deposite – June 2015 ISBN 2-910015-73-4 Foreword The observation of Solar System Objects (SSO) by the Gaia space astrometry mission will be constrained by a scanning law. Much detection of interesting objects may occur with no possibility of further observations by the probe. These objects will then require complementary ground-based observations. Among them, previously unknown Near- Earth Objects, fast moving towards the Earth or going away from it could be found. Several objects discovered by Gaia could also be Inner-Earth Objects, as the probe will observe at rather low Solar elongations. In order to confirm from the ground the discoveries made in space and to follow interesting targets, a dedicated network is organized, the Gaia Follow-Up Network. This task is performed in the frame of the Coordination Unit 4 of the Gaia Data Processing and Analysis Consortium (DPAC), devoted to data processing of specific objects. The goal of the network is to improve the knowledge of the orbit of poorly observed targets by astrometric observations on alert. This activity is coordinated by a central node interacting with the Gaia data reduction pipeline all along the mission. In 2010 and 2012, we had organized the first two workshops in order to initiate the network and to meet the participants. In 2014, almost one year after the launch of Gaia, we organize the third Gaia-FUN-SSO workshop in Paris in order to discuss further the coordination of the network of observing stations, to discuss the prelaunch training observations which have been performed and to prepare the network for the operating phase of the alert mode which must begin in 2015. During this workshop, the participants had the opportunity to be informed about the status of the Gaia mission, about the alert process for SSO and the ground-based data processing. They were invited to present their activities in relation with this program, or their equipment, instruments and observing sites. Large time slots have been reserved for discussions. This workshop was fruitful and articles have been gathered in these proceedings with the aim to keep track of these very interesting days. Paolo Tanga/OCA & William Thuillot, IMCCE/Paris Observatory Co-chairmen of the Gaia-FUN-SSO 2014 Workshop Legal Deposite – June 2015 ISBN 2-910015-73-4 Committees SOC - Members of the Scientific Organizing Committee • W. Thuillot, co-Chair, IMCCE, Paris Observatory, France, ([email protected]), • P. Tanga, co-Chair, OCA, France, ([email protected]), • B. Carry, IMCCE, Paris Observatory, France, ([email protected]), • A. Cellino, Torino obs., Italy, ([email protected]), • D. Hestroffer, IMCCE, Paris Observatory, France, ([email protected]), • F. Mignard, OCA, France, ([email protected]), • E. Perozzi, Deimos, Spain, ([email protected]), • L. Wyrzykowski, University of Warsaw, Poland ([email protected]) LOC - Members of the Local Organizing Committee • D. Hestroffer (chair, [email protected]), • William Thuillot (co-chair, [email protected]), • R. Amhidez • K. Mesloug • F. Noctulle CONTACT • Mail: [email protected] • Web site of the workshop: http://www.imcce.fr/hosted_sites/gaiafun2014 Committees List of Participants SOC - Members of the Scientific Organizing Committee 1. Aldiyar Agyshev (Al-Farabi Kazakh nat. univ., [email protected]) 2. Martin Altmann (ZAH Heidelberg, Germany, [email protected]) • W. Thuillot, co-Chair, IMCCE, Paris Observatory, France, ([email protected]), 3. Jean-Eudes Arlot (IMCCE, Paris Observatory, France, [email protected]) 4. David Bancelin (IMCCE, Paris Observatory, France, [email protected]) • P. Tanga, co-Chair, OCA, France, ([email protected]), 5. Irina Belskaya (Inst. Astron., Kharkiv National Univ., Ukraine, [email protected]) • B. Carry, IMCCE, Paris Observatory, France, ([email protected]), 6. Philippe Bendjoya (OCA, France, [email protected]) 7. Mirel Birlan (IMCCE, Paris Observatory, France, [email protected]) • A. Cellino, Torino obs., Italy, ([email protected]), 8. Benoît Carry (IMCCE, Paris Observatory, France, [email protected]) 9. Alberto Cellino (Torino Observatory, Italy, [email protected]) • D. Hestroffer, IMCCE, Paris Observatory, France, ([email protected]), 10. François Colas (IMCCE, Paris Observatory, France, [email protected]) • F. Mignard, OCA, France, ([email protected]), 11. Goran Damljanovic (Astron. Obs., Belgrade, Rep. Serbia, [email protected]) 12. Pedro David (IMCCE, Paris Observatory, France, [email protected]) • E. Perozzi, Deimos, Spain, ([email protected]), 13. Siegfried Eggl (IMCCE, Paris Observatory, France, [email protected]) 14. Zeki Eker (Akdeniz Univ., Dept Space Sc.Techn., Antalya, Turkey, [email protected]) • L. Wyrzykowski, University of Warsaw, Poland ([email protected]) 15. Orhan Erece (Akdeniz Univ., Spa. Sc.Tech., Antalya, Turkey, [email protected]) 16. Vira Godunova (ICAMER Observatory,NASU, Ukraine, [email protected]) 17. Denis Gorshanov (Pulkovo observatory, Russia, [email protected]) LOC - Members of the Local Organizing Committee 18. Mikael Granvik (Dep. of Physics, University of Helsinki, Finland, [email protected]) 19. Selcuk Helhel (Akdeniz Univ., Antalya, Turkey, [email protected]) • D. Hestroffer (chair, [email protected]), 20. Daniel Hestroffer (IMCCE, Paris Observatory, France, [email protected]) 21. Anatoliy Ivantsov (Technion , Israel Inst. Tech., Haifa, Israel, [email protected]) • William Thuillot (co-chair, [email protected]), 22. Gizem Kahya (TUBITAK National Obs., Turkey, [email protected]) 23. Süleyman Kaynar (TUBITAK National Obs., Turkey, [email protected]) • R. Amhidez 24. Irek Khamitov (TUBITAK National Obs., Turkey, [email protected]) • K. Mesloug 25. Sergii Khlamov (Kharkiv National Univ. of Radio Electronics, [email protected]) 26. Irina Kovalenko (IMCCE, Paris Observatory, France, [email protected]) • F. Noctulle 27. Yurij Krugly (Inst. Astron.,Kharkiv Nat. Univ., Ukraine, [email protected]) 28. Maria Kudryashova (IMCCE, Paris Observatory, France, [email protected]) 29. Eduard Kuznetsov (Ural Federal University, Russia, [email protected]) 30. Nadia Maigurova (Nikolaev Observatory, Ukraine, [email protected]) CONTACT 31. Chingis Omarov (Fessenkov Astrophysical Institute, [email protected]) 32. Myriam Pajuelo (IMCCE, Paris Observatory, France, [email protected]) • Mail: [email protected] 33. Thierry Pauwels (Koninklijke Sterrenwacht van Belgi, [email protected]) 34. Elena Pavlova (Keldysh Inst. of Applied Math., Moscow, Russia, [email protected] • Web site of the workshop: http://www.imcce.fr/hosted_sites/gaiafun2014 35. Ettore Perozzi (Deimos Space, Spain, [email protected]) 36. Gennadiy Pinigin (Nikolaev Observatory, Ukraine, [email protected]) 37. Dumitru Pricopi (Astron. Inst. of the Romanian Academy, [email protected]) 38. Timo Prusti (ESA, ESTEC, the Netherlands, [email protected]) 39. Jean-Pierre Rivet (OCA, France, [email protected]) 40. Vasilij Rumyantsev (Crimean Astrophysical Observatory, [email protected]) 41. Davesh Path Sariya (ARIES, India, [email protected]) 42. Marian Doru Suran (Astron. Institute of the Romanian Academy, [email protected]) 43. Yevgeniya Sybiryakova (Nikolaev Astron. observatory, Ukraine, [email protected]) 44. Paolo Tanga (OCA, France, [email protected]) 45. William Thuillot (IMCCE, Paris Observatory, France, [email protected]) 46. Volodymyr Troianskyi (Astron. Obs. of Odessa University, [email protected]) 47. Dmitrii Vavilov (Inst. of Applied Astron. of Russian Acad. Sc., Russia, [email protected]) 48. Lukasz Wyrzykowski (IoA, Cambridge, UK & Warsaw, Poland, [email protected]) 49. Polina Zakharova (Ural Federal University, Russia, [email protected]) 50. Xiliang Zhang (Yunnan Observatories,CAS, China, [email protected]) Acknowledgements We are grateful to the following institutions which have supported the organization of this workshop: • Gaia Research for European Astronomy Training (GREAT-ESF) : www.ast.cam.ac.uk/ioa/GREAT • Action Spécifique Gaia : wwwhip.obspm.fr/AS • Scientific council of Paris Observatory : www.obspm.fr • IMCCE-Paris Observatory : www.imcce.fr • Côte d'Azur Observatory (OCA) : www.oca.eu We thank also several colleagues from IMCCE their help in this organization and in particular Yohann Gominet for the design of the workshop poster and Sylvie Lemaitre and Yohann Gominet for these proceedings. Acknowledgements PROGRAM We are grateful to the following institutions which have supported the organization of Monday November 24 this workshop: • Gaia Research for European Astronomy Training (GREAT-ESF) : 10:00 – Welcome address by M. Claude Catala, President of Paris Observatory www.ast.cam.ac.uk/ioa/GREAT 10:10 – Opening and practical information (Paolo Tanga & William Thuillot, co-chairmen) • Action Spécifique Gaia : wwwhip.obspm.fr/AS • Scientific council of Paris Observatory : www.obspm.fr • IMCCE-Paris Observatory : www.imcce.fr Session 1: General context • Côte d'Azur Observatory (OCA) : www.oca.eu Chair: W. Thuillot We thank also several colleagues from IMCCE their help in this organization and in 10:25 – Gaia status particular Yohann Gominet
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  • Astrometry of Three Near Earth Asteroids with the Lijiang 2.4 M Telescope

    Astrometry of Three Near Earth Asteroids with the Lijiang 2.4 M Telescope

    Research in Astron. Astrophys. Vol.xx (20xx) No.XX, 000–000 Research in http://www.raa-journal.org http://www.iop.org/journals/raa Astronomy and Astrophysics Astrometry of three near Earth asteroids with the Lijiang 2.4 m telescope Xi-Liang Zhang1;2;3, Yong Yu3, Xue-Li Wang1;2, Chuan-Jun Wang1;2, Liang Chang1;2 Yu-Feng Fan1;2 and Zheng-Hong Tang3 1 Yunnan Observatories, Chinese Academy of Sciences (CAS), P. O. Box 110, Kunming 650011, China; [email protected] 2 Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P. O. Box 110, Kunming 650011, China 3 Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 20030, China Received 2014 April 10; accepted 2014 June 27 Abstract Under the framework of the observational campaigns organized by the GAIA Follow Up Network for Solar System Objects (GAIA-FUN-SSO), three near Earth asteroids of (367943) Duende, (99942) Apophis and 2013 TV135 were observed with the Lijiang 2.4 m telescope of Yunnan Observatories. The software PRISM was used to calibrate the CCD fields and measure the positions of Apophis and 2013 TV135, and our own software was used to Duende. Comparison results have shown that, the ephemerides of INPOP10a and JPL are consistent for Apophis and 2013 TV135, however quite inconsistent for Duende. Moreover, we have found that the mean values of the system errors between the ephemerides of INPOP10a and JPL are about 7200 and ¡19900 in right ascension and declination respectively for Duende, and the ephemeris JPL is reliable with the means of O ¡ C (observed-minus- calculated) residuals in right ascension and declination about 2:7200 and 1:4900.
  • Astrometry of Three Near Earth Asteroids with the Lijiang 2.4 M Telescope ∗

    Astrometry of Three Near Earth Asteroids with the Lijiang 2.4 M Telescope ∗

    RAA 2015 Vol. 15 No. 3, 435–442 doi: 10.1088/1674–4527/15/3/010 Research in http://www.raa-journal.org http://www.iop.org/journals/raa Astronomy and Astrophysics Astrometry of three near Earth asteroids with the Lijiang 2.4 m telescope ¤ Xi-Liang Zhang1;2;3, Yong Yu3, Xue-Li Wang1;2, Chuan-Jun Wang1;2, Liang Chang1;2 Yu-Feng Fan1;2 and Zheng-Hong Tang3 1 Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China; [email protected] 2 Key Laboratory of the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China 3 Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 20030, China Received 2014 April 10; accepted 2014 June 27 Abstract Under the framework of observational campaigns organized by the GAIA Follow Up Network for Solar System Objects, three near Earth asteroids, 367943 Duende, 99942 Apophis and 2013 TV135, were observed with the Lijiang 2.4 m telescope administered by Yunnan Observatories. The software package PRISM was used to calibrate the CCD fields and measure the positions of 99942 Apophis and 2013 TV135, and our own software was used for 367943 Duende. A comparison of the results show that the ephemerides of INPOP10a and JPL are consistent for 99942 Apophis and 2013 TV135, however, they are quite inconsistent for 367943 Duende. Moreover, we have found that differences between the mean values in the ephemerides of INPOP10a and JPL are about 7200 and ¡19900 in right ascension and declination respectively for 367943 Duende. Moreover, the ephemeris published by JPL is reliable in terms of the mean observed-minus-calculated (O ¡ C) residuals in right ascension and declination of about 2:7200 and 1:4900 respectively.