Gaia Focused Product Release : Asteroid orbital solution

David, P. and Mignard, F. and Hestroffer, D. and Tanga, P. and Spoto, F. and Berthier, J. and Pauwels, T. and Roux, W. and Barbier, A. and Cellino, A. and Carry, B. and Delbo, M. and Dell’Oro, A. and Fouron, C. and Galluccio, L. and Klioner, S. A. and Mary, N. and Muinonen, K. and Ordenovic, C. and Oreshina-Slezak, I. and Panem, C. and Petit, J.-M. and Portell, J. and Brown, A. G. A. and Thuillot, W. and Vallenari, A. and Prusti, T. and de Bruijne, J. H. J. and Arenou, F. and Babusiaux, C. and Biermann, M. and Creevey, O. L. and Ducourant, C. and Evans, D. W. and Eyer, L. and Guerra, R. and Hutton, A. and Jordi, C. and Lammers, U. and Lindegren, L. and Luri, X. and Randich, S. and Sartoretti, P. and Smiljanic, R. and Walton, N. A. and Bailer-Jones, C. A. L. and Bastian, U. and Cropper, M. and Drimmel, R. and Katz, D. and Soubiran, C. and van Leeuwen, F. and Audard, M. and Bakker, J. and Blomme, R. and Castañeda, J. and De Angeli, F. and Fabricius, C. and Fouesneau, M. and Frémat, Y. and Guerrier, A. and Masana, E. and Messineo, R. and Nicolas, C. and Nienartowicz, K. and Pailler, F. and Panuzzo, P. and Riclet, F. and Seabroke, G. M. and Sordo, R. and Thévenin, F. and Gracia-Abril, G. and Teyssier, D. and Altmann, M. and Benson, K. and Burgess, P. W. and Busonero, D. and Busso, G. and Cánovas, H. and Cheek, N. and Clementini, G. and Damerdji, Y. and Davidson, M. and de Teodoro, P. and Delchambre, L. and Fraile Garcia, E. and Garabato, D. and García-Lario, P. and Garralda Torres, N. and Gavras, P. and Haigron, R. and Hambly, N. C. and Harrison, D. L. and Hatzidimitriou, D. and Hernández, J. and Hodgkin, S. T. and Holl, B. and Jamal, S. and Jordan, S. and Krone-Martins, A. and Lanzafame, A. C. and Löffler, W. and Lorca, A. and Marchal, O. and Marrese, P. M. and Moitinho, A. and Nuñez Campos, M. and Osborne, P. and Pancino, E. and Recio-Blanco, A. and Riello, M. and Rimoldini, L. and Robin, A. C. and Roegiers, T. and Sarro, L. M. and Schultheis, M. and Siopis, C. and Smith, M. and Sozzetti, A. and Utrilla, E. and van Leeuwen, M. and Weingrill, K. and Abbas, U. and Ábrahám, P. and Abreu Aramburu, A. and Aerts, C. and Altavilla, G. and Álvarez, M. A. and Alves, J. and Anderson, R. I. and Antoja, T. and Baines, D. and Baker, S. G. and Balog, Z. and Barache, C. and Barbato, D. and Barros, M. and Barstow, M. A. and Bartolomé, S. and Bashi, D. and Bauchet, N. and Baudeau, N. and Becciani, U. and Bedin, L. R. and Bellas-Velidis, I. and Bellazzini, M. and Beordo, W. and Berihuete, A. and Bernet, M. and Bertolotto, C. and Bertone, S. and Bianchi, L. and Binnenfeld, A. and Blazere, A. and Boch, T. and Bombrun, A. and Bouquillon, S. and Bragaglia, A. and Braine, J. and Bramante, L. and Breedt, E. and Bressan, A. and Brouillet, N. and Brugaletta, E. and Bucciarelli, B. and Butkevich, A. G. and Buzzi, R. and Caffau, E. and Cancelliere, R. and Cannizzo, S. and Carballo, R. and Carlucci, T. and Carnerero, M. I. and Carrasco, J. M. and Carretero, J. and Carton, S. and Casamiquela, L. and Castellani, M. and Castro-Ginard, A. and Cesare, V. and Charlot, P. and Chemin, L. and Chiaramida, V. and Chiavassa, A. and Chornay, N. and Collins, R. and Contursi, G. and Cooper, W. J. and Cornez, T. and Crosta, M. and Crowley, C. and Dafonte, C. and de Laverny, P. and De Luise, F. and De March, R. and de Souza, R. and de Torres, A. and del Peloso, E. F. and Delgado, A. and Dharmawardena, T. E. and Diakite, S. and Diener, C. and Distefano, E. and Dolding, C. and Dsilva, K. and Durán, J. and Enke, H. and Esquej, P. and Fabre, C. and Fabrizio, M. and Faigler, S. and Fatović, M. and Fedorets, G. and Fernández-Hernández, J. and Fernique, P. and Figueras, F. and Fournier, Y. and Gai, M. and Galinier, M. and Garcia-Gutierrez, A. and García-Torres, M. and Garofalo, A. and Gerlach, E. and Geyer, R. and Giacobbe, P. and Gilmore, G. and Girona, S. and Giuffrida, G. and Gomel, R. and Gomez, A. and González-Núñez, J. and González-Santamaría, I. and Gosset, E. and Granvik, M. and Gregori Barrera, V. and Gutiérrez-Sánchez, R. and Haywood, M. and Helmer, A. and Helmi, A. and Henares, K. and Hidalgo, S. L. and Hilger, T. and Hobbs, D. and Hottier, C. and Huckle, H. E. and Jabłońska, M. and Jansen, F. and Jiménez-Arranz, Ó. and Juaristi Campillo, J. and Khanna, S. and Kordopatis, G. and Kóspál, Á. and Kostrzewa-Rutkowska, Z. and Kun, M. and Lambert, S. and Lanza, A. F. and Le Campion, J.-F. and Lebreton, Y. and Lebzelter, T. and Leccia, S. and Lecoeur-Taibi, I. and Lecoutre, G. and Liao, S. and Liberato, L. and Licata, E. and Lindstrøm, H. E. P. and Lister, T. A. and Livanou, E. and Lobel, A. and Loup, C. and Mahy, L. and Mann, R. G. and Manteiga, M. and Marchant, J. M. and Marconi, M. and Marín Pina, D. and Marinoni, S. and Marshall, D. J. and Martín Lozano, J. and Martín-Fleitas, J. M. and Marton, G. and Masip, A. and Massari, D. and Mastrobuono-Battisti, A. and Mazeh, T. and McMillan, P. J. and Meichsner, J. and Messina, S. and Michalik, D. and Millar, N. R. and Mints, A. and Molina, D. and Molinaro, R. and Molnár, L. and Monari, G. and Monguió, M. and Montegriffo, P. and Montero, A. and Mor, R. and Mora, A. and Morbidelli, R. and Morel, T. and Morris, D. and Mowlavi, N. and Munoz, D. and Muraveva, T. and Murphy, C. P. and Musella, I. and Nagy, Z. and Nieto, S. and Noval, L. and Ogden, A. and Pagani, C. and Pagano, I. and Palaversa, L. and Palicio, P. A. and Pallas-Quintela, L. and Panahi, A. and Payne-Wardenaar, S. and Pegoraro, L. and Penttilä, A. and Pesciullesi, P. and Piersimoni, A. M. and Pinamonti, M. and Pineau, F.-X. and Plachy, E. and Plum, G. and Poggio, E. and Pourbaix, D. and Prša, A. and Pulone, L. and Racero, E. and Rainer, M. and Raiteri, C. M. and Ramos, P. and Ramos-Lerate, M. and Ratajczak, M. and Re Fiorentin, P. and Regibo, S. and Reylé, C. and Ripepi, V. and Riva, A. and Rix, H.-W. and Rixon, G. and Robichon, N. and Robin, C. and Romero-Gómez, M. and Rowell, N. and Royer, F. and Ruz Mieres, D. and Rybicki, K. A. and Sadowski, G. and Sáez Núñez, A. and Sagristà Sellés, A. and Sahlmann, J. and Sanchez Gimenez, V. and Sanna, N. and Santoveña, R. and Sarasso, M. and Sarrate Riera, C. and Sciacca, E. and Segovia, J. C. and Ségransan, D. and Shahaf, S. and Siebert, A. and Siltala, L. and Slezak, E. and Smart, R. L. and Snaith, O. N. and Solano, E. and Solitro, F. and Souami, D. and Souchay, J. and Spina, L. and Spitoni, E. and Squillante, L. A. and Steele, I. A. and Steidelmüller, H. and Surdej, J. and Szabados, L. and Taris, F. and Taylor, M. B. and Teixeira, R. and Tisanić, K. and Tolomei, L. and Torra, F. and Torralba Elipe, G. and Trabucchi, M. and Tsantaki, M. and Ulla, A. and Unger, N. and Vanel, O. and Vecchiato, A. and Vicente, D. and Voutsinas, S. and Weiler, M. and Wyrzykowski, Ł. and Zhao, H. and Zorec, J. and Zwitter, T. and Balaguer-Núñez, L. and Leclerc, N. and Morgenthaler, S. and Robert, G. and Zucker, S. (2023) Gaia Focused Product Release : Asteroid orbital solution. ASTRONOMY & ASTROPHYSICS, 680. No. A37. ISSN 0004-6361

Preview

Text aa47270-23.pdf - Published Version Available under License Creative Commons Attribution. Download (6MB) | Preview

Abstract

Context. We report the exploitation of a sample of Solar System observations based on data from the third Gaia Data Release (Gaia DR3) of nearly 157 000 asteroids. It extends the epoch astrometric solution over the time coverage planned for the Gaia DR4, which is not expected before the end of 2025. This data set covers more than one full orbital period for the vast majority of these asteroids. The orbital solutions are derived from the Gaia data alone over a relatively short arc compared to the observation history of many of these asteroids. Aims. The work aims to produce orbital elements for a large set of asteroids based on 66 months of accurate astrometry provided by Gaia and to assess the accuracy of these orbital solutions with a comparison to the best available orbits derived from independent observations. A second validation is performed with accurate occultation timings. Methods. We processed the raw astrometric measurements of Gaia to obtain astrometric positions of moving objects with 1D sub-mas accuracy at the bright end. For each asteroid that we matched to the data, an orbit fitting was attempted in the form of the best fit of the initial conditions at the median epoch. The force model included Newtonian and relativistic accelerations to derive the observation equations, which were solved with a linear least-squares fit. Results. Orbits are provided in the form of state vectors in the International Celestial Reference Frame for 156 764 asteroids, including near-Earth objects, main-belt asteroids, and Trojans. For the asteroids with the best observations, the (formal) relative uncertainty σa/a is better than 10−10. Results are compared to orbits available from the Jet Propulsion Laboratory and MPC. Their orbits are based on much longer data arcs, but from positions of lower quality. The relative differences in semi-major axes have a mean of 5 × 10−10 and a scatter of 5 × 10−9.

Actions (login required)

Edit Item