Search Results - "Camargo, J. I. B"

THE SIZE, SHAPE, ALBEDO, DENSITY, AND ATMOSPHERIC LIMIT OF TRANSNEPTUNIAN OBJECT (50000) QUAOAR FROM MULTI-CHORD STELLAR OCCULTATIONS by Braga-Ribas, F, Sicardy, B, Ortiz, J L, Lellouch, E, Tancredi, G, Lecacheux, J, Vieira-Martins, R, Camargo, J I B, ASSAFIN, M, Behrend, R

“…We present results derived from the first multi-chord stellar occultations by the transneptunian object (50000) Quaoar, observed on 2011 May 4 and 2012…”
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APPROX – mutual approximations between the Galilean moons: the 2016–2018 observational campaign by Morgado, B, Vieira-Martins, R, Assafin, M, Machado, D I, Camargo, J I B, Sfair, R, Malacarne, M, Braga-Ribas, F, Robert, V, Bassallo, T, Benedetti-Rossi, G, Boldrin, L A, Borderes-Motta, G, Camargo, B C B, Crispim, A, Dias-Oliveira, A, Gomes-Júnior, A R, Lainey, V, Miranda, J O, Moura, T S, Ribeiro, F K, Santana, T de, Santos-Filho, S, Trabuco, L L, Winter, O C, Yamashita, T A R

“…The technique of mutual approximations accurately gives the central instant of the maximum apparent approximation of two moving natural satellites in the plane…”
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New orbits of irregular satellites designed for the predictions of stellar occultations up to 2020, based on thousands of new observations by Gomes-Júnior, A. R., Assafin, M., Beauvalet, L., Desmars, J., Vieira-Martins, R., Camargo, J. I. B., Morgado, B. E., Braga-Ribas, F.

“…Gomes-Júnior et al. published 3613 positions for the eight largest irregular satellites of Jupiter and 1787 positions for the largest irregular satellite of…”
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The first observed stellar occultations by the irregular satellite Phoebe (Saturn IX) and improved rotational period by Gomes-Júnior, A R, Assafin, M, Braga-Ribas, F, Benedetti-Rossi, G, Morgado, B E, Camargo, J I B, Vieira-Martins, R, Desmars, J, Sicardy, B, Barry, T, Campbell-White, J, Fernández-Lajús, E, Giles, D, Hanna, W, Hayamizu, T, Hirose, T, De Horta, A, Horvat, R, Hosoi, K, Jehin, E, Kerr, S, Machado, D I, Mammana, L A, Maybour, D, Owada, M, Rahvar, S, Snodgrass, C

“…ABSTRACT We report six stellar occultations by Phoebe (Saturn IX), an irregular satellite of Saturn, obtained between mid-2017 and mid-2019. The 2017 July 6…”
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Astrometry of mutual approximations between natural satellites. Application to the Galilean moons by Morgado, B., Assafin, M., Vieira-Martins, R., Camargo, J. I. B., Dias-Oliveira, A., Gomes-Júnior, A. R.

“…Typically we can deliver astrometric positions of natural satellites with errors in the 50–150 mas range. Apparent distances from mutual phenomena, have much…”
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The non-convex shape of (234) Barbara, the first Barbarian by Tanga, P., Carry, B., Colas, F., Delbo, M., Matter, A., Hanuš, J., Alí Lagoa, V., Andrei, A. H., Assafin, M., Audejean, M., Behrend, R., Camargo, J. I. B., Carbognani, A., Cedrés Reyes, M., Conjat, M., Cornero, N., Coward, D., Crippa, R., de Ferra Fantin, E., Devogéle, M., Dubos, G., Frappa, E., Gillon, M., Hamanowa, H., Jehin, E., Klotz, A., Kryszczyńska, A., Lecacheux, J., Leroy, A., Manfroid, J., Manzini, F., Maquet, L., Morelle, E., Mottola, S., Polińska, M., Roy, R., Todd, M., Vachier, F., Vera Hernández, C., Wiggins, P.

“…Asteroid (234) Barbara is the prototype of a category of asteroids that has been shown to be extremely rich in refractory inclusions, the oldest material ever…”
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Analysis of 25 mutual eclipses and occultations between the Galilean satellites observed from Brazil in 2009 by Dias-Oliveira, A., Vieira-Martins, R., Assafin, M., Camargo, J. I. B., Braga-Ribas, F., da Silva Neto, D. N., Gaspar, H. S., Pires dos Santos, P. M., Domingos, R. C., Boldrin, L. A. G., Izidoro, A., Carvalho, J. P. S., Sfair, R., Sampaio, J. C., Winter, O. C.

“…The light curves of mutual eclipses and occultations between the natural satellites of a planet allow us to obtain high-precision position and relative motion…”
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Rio survey of optical astrometric positions for 300 ICRF2 sources and the current optical/radio frame link status before Gaia by Assafin, M., Vieira-Martins, R., Andrei, A. H., Camargo, J. I. B., da Silva Neto, D. N.

“…We obtained improved optical positions for 300 ICRF2 sources - the Rio survey. We compared the Rio survey with 10 other selected optical astrometric surveys…”
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Results of two multichord stellar occultations by dwarf planet (1) Ceres by Gomes-Júnior, A. R., Giacchini, B. L., Braga-Ribas, F., Assafin, M., Vieira-Martins, R., Camargo, J. I. B., Sicardy, B., Timerson, B., George, T., Broughton, J., Blank, T., Benedetti-Rossi, G., Brooks, J., Dantowitz, R. F., Dunham, D. W., Dunham, J. B., Ellington, C. K., Emilio, M., Herpich, F. R., Jacques, C., Maley, P. D., Mehret, L., Mello, A. J. T., Milone, A. C., Pimentel, E., Schoenell, W., Weber, N. S.

“…We report the results of two multichord stellar occultations by the dwarf planet (1) Ceres that were observed from Brazil on 2010 August 17, and from the USA…”
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A dense ring of the trans-Neptunian object Quaoar outside its Roche limit by Morgado, B. E., Sicardy, B., Braga-Ribas, F., Ortiz, J. L., Salo, H., Vachier, F., Desmars, J., Pereira, C. L., Santos-Sanz, P., Sfair, R., de Santana, T., Assafin, M., Vieira-Martins, R., Gomes-Júnior, A. R., Margoti, G., Dhillon, V. S., Fernández-Valenzuela, E., Broughton, J., Bradshaw, J., Langersek, R., Benedetti-Rossi, G., Souami, D., Holler, B. J., Kretlow, M., Boufleur, R. C., Camargo, J. I. B., Duffard, R., Beisker, W., Morales, N., Lecacheux, J., Rommel, F. L., Herald, D., Benz, W., Jehin, E., Jankowsky, F., Marsh, T. R., Littlefair, S. P., Bruno, G., Pagano, I., Brandeker, A., Collier-Cameron, A., Florén, H. G., Hara, N., Olofsson, G., Wilson, T. G., Benkhaldoun, Z., Busuttil, R., Burdanov, A., Ferrais, M., Gault, D., Gillon, M., Hanna, W., Kerr, S., Kolb, U., Nosworthy, P., Sebastian, D., Snodgrass, C., Teng, J. P., de Wit, J.

“…Planetary rings are observed not only around giant planets 1 , but also around small bodies such as the Centaur Chariklo 2 and the dwarf planet Haumea 3 . Up…”
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Mutual approximations between the five main moons of Uranus by Santos-Filho, S, Assafin, M, Morgado, B E, Vieira-Martins, R, Camargo, J I B, Gomes-Júnior, A R, Benedetti-Rossi, G

“…ABSTRACT Doing high-precision astrometry on Uranus’ moons is currently quite challenging. No probes will orbit the system before 2040. New high-precision…”
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Parallaxes of Southern Extremely Cool objects III: 118 L and T dwarfs by Smart, R L, Bucciarelli, B, Jones, H R A, Marocco, F, Andrei, A H, Goldman, B, Mendez, R A, d’Avila, V A, Burningham, B, Camargo, J I B, Crosta, M T, Daprà, M, Jenkins, J S, Lachaume, R, Lattanzi, M G, Penna, J L, Pinfield, D J, da Silva Neto, D N, Sozzetti, A, Vecchiato, A

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Author Correction: A dense ring of the trans-Neptunian object Quaoar outside its Roche limit by Morgado, B. E., Sicardy, B., Braga-Ribas, F., Ortiz, J. L., Salo, H., Vachier, F., Desmars, J., Pereira, C. L., Santos-Sanz, P., Sfair, R., de Santana, T., Assafin, M., Vieira-Martins, R., Gomes-Júnior, A. R., Margoti, G., Dhillon, V. S., Fernández-Valenzuela, E., Broughton, J., Bradshaw, J., Langersek, R., Benedetti-Rossi, G., Souami, D., Holler, B. J., Kretlow, M., Boufleur, R. C., Camargo, J. I. B., Duffard, R., Beisker, W., Morales, N., Lecacheux, J., Rommel, F. L., Herald, D., Benz, W., Jehin, E., Jankowsky, F., Marsh, T. R., Littlefair, S. P., Bruno, G., Pagano, I., Brandeker, A., Collier-Cameron, A., Florén, H. G., Hara, N., Olofsson, G., Wilson, T. G., Benkhaldoun, Z., Busuttil, R., Burdanov, A., Ferrais, M., Gault, D., Gillon, M., Hanna, W., Kerr, S., Kolb, U., Nosworthy, P., Sebastian, D., Snodgrass, C., Teng, J. P., de Wit, J.

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Kilometer-precise (UII) Umbriel physical properties from the multichord stellar occultation on 2020 September 21 by Assafin, M, Santos-Filho, S, Morgado, B E, Gomes-Júnior, A R, Sicardy, B, Margoti, G, Benedetti-Rossi, G, Braga-Ribas, F, Laidler, T, Camargo, J I B, Vieira-Martins, R, Swift, T, Dunham, D, George, T, Bardecker, J, Anderson, C, Nolthenius, R, Bender, K, Viscome, G, Oesper, D, Dunford, R, Getrost, K, Kitting, C, Green, K, Bria, R, Olsen, A, Scheck, A, Billard, B, Wasiuta, M E, Tatum, R, Maley, P, Cicco, D di, Gamble, D, Ceravolo, P, Ceravolo, D, Hanna, W, Smith, N, Carlson, N, Messner, S, Bean, J, Moore, J, Venable, R

“…ABSTRACT We report the results of the stellar occultation by (UII) Umbriel on 2020 September 21. The shadow crossed the USA and Canada, and 19 positive chords…”
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PLUTO's ATMOSPHERE FROM STELLAR OCCULTATIONS IN 2012 AND 2013 by Dias-Oliveira, A, Sicardy, B, Lellouch, E, Vieira-Martins, R, Assafin, M, Camargo, J I B, Braga-Ribas, F, Gomes-Junior, A R, Benedetti-Rossi, G, Colas, F

“…We analyze two multi-chord stellar occultations by Pluto that were observed on 2012 July 18th and 2013 May 4th, and respectively monitored from five and six…”
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PLUTO’s ATMOSPHERE FROM STELLAR OCCULTATIONS IN 2012 AND 2013 by Dias-Oliveira, A., Sicardy, B., Lellouch, E., Vieira-Martins, R., Assafin, M., Camargo, J. I. B., Braga-Ribas, F., Gomes-Júnior, A. R., Benedetti-Rossi, G., Colas, F., Decock, A., Doressoundiram, A., Dumas, C., Emilio, M., Fabrega Polleri, J., Gil-Hutton, R., Gillon, M., Girard, J. H., Hau, G. K. T., Ivanov, V. D., Jehin, E., Lecacheux, J., Leiva, R., Lopez-Sisterna, C., Mancini, L., Manfroid, J., Maury, A., Meza, E., Morales, N., Nagy, L., Opitom, C., Ortiz, J. L., Pollock, J., Roques, F., Snodgrass, C., Soulier, J. F., Thirouin, A., Vanzi, L., Widemann, T., Reichart, D. E., LaCluyze, A. P., Haislip, J. B., Ivarsen, K. M., Dominik, M., Jørgensen, U., Skottfelt, J.

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The 2017 May 20 stellar occultation by the elongated centaur (95626) 2002 GZ32 by Santos-Sanz, P, Ortiz, J L, Sicardy, B, Benedetti-Rossi, G, Morales, N, Fernández-Valenzuela, E, Duffard, R, Iglesias-Marzoa, R, Lamadrid, J L, Maícas, N, Pérez, L, Gazeas, K, Guirado, J C, Peris, V, Ballesteros, F J, Organero, F, Ana-Hernández, L, Fonseca, F, Alvarez-Candal, A, Jiménez-Teja, Y, Vara-Lubiano, M, Braga-Ribas, F, Camargo, J I B, Desmars, J, Assafin, M, Vieira-Martins, R, Alikakos, J, Boutet, M, Bretton, M, Carbognani, A, Charmandaris, V, Ciabattari, F, Delincak, P, Fuambuena Leiva, A, González, H, Haymes, T, Hellmich, S, Horbowicz, J, Jennings, M, Kattentidt, B, Kiss, Cs, Komžík, R, Lecacheux, J, Marciniak, A, Moindrot, S, Mottola, S, Pal, A, Paschalis, N, Pastor, S, Perello, C, Pribulla, T, Ratinaud, C, Reyes, J A, Sanchez, J, Schnabel, C, Selva, A, Signoret, F, Sonbas, E, Alí-Lagoa, V

“…ABSTRACT We predicted a stellar occultation of the bright star Gaia DR1 4332852996360346368 (UCAC4 385-75921) (mV = 14.0 mag) by the centaur 2002 GZ32 for 2017…”
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Triplicity and physical characteristics of Asteroid (216) Kleopatra by Descamps, P., Marchis, F., Berthier, J., Emery, J.P., Duchêne, G., de Pater, I., Wong, M.H., Lim, L., Hammel, H.B., Vachier, F., Wiggins, P., Teng-Chuen-Yu, J.-P., Peyrot, A., Pollock, J., Assafin, M., Vieira-Martins, R., Camargo, J.I.B., Braga-Ribas, F., Macomber, B.

“…► In this study we observed and modelled the Asteroid (216) Kleopatra through different technics. ► The work revealed two moonlets orbiting Kleopatra. ► From…”
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New insights on the binary Asteroid 121 Hermione by Descamps, P., Marchis, F., Durech, J., Emery, J., Harris, A.W., Kaasalainen, M., Berthier, J., Teng-Chuen-Yu, J.-P., Peyrot, A., Hutton, L., Greene, J., Pollock, J., Assafin, M., Vieira-Martins, R., Camargo, J.I.B., Braga-Ribas, F., Vachier, F., Reichart, D.E., Ivarsen, K.M., Crain, J.A., Nysewander, M.C., Lacluyze, A.P., Haislip, J.B., Behrend, R., Colas, F., Lecacheux, J., Bernasconi, L., Roy, R., Baudouin, P., Brunetto, L., Sposetti, S., Manzini, F.

“…We report on the results of a 6-month photometric study of the main-belt binary C-type Asteroid 121 Hermione, performed during its 2007 opposition. We took…”
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Investigation of USNO-A2.0 Catalog Positions by Assafin, M, Andrei, A. H, Martins, R. Vieira, da Silva Neto, D. N, Camargo, J. I. B, Teixeira, R, Benevides-Soares, P

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