The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations

著者: C. W. Hergenrother, C. Maleszewski, M. C. Nolan, Jian‐Yang Li, C. Drouet d’Aubigny, F. C. Shelly, E. S. Howell, Theodore Kareta, M. R. M. Izawa, M. A. Barucci, E. B. Bierhaus, H. Campins, Steven R. Chesley, B. E. Clark, E. Christensen, D. N. DellaGiustina, S. Fornasier, D. R. Golish, Christine Hartzell, B. Rizk, Daniel J. Scheeres, Peter H. Smith, Xiao‐Duan Zou, D. S. Lauretta, The OSIRIS-REx Team, D. E. Highsmith, Jeffrey L. Small, David Vokrouhlický, N. E. Bowles, Eric Brown, K. L. Donaldson Hanna, T. Warren, C. Brunet, R. A. Chicoine, Serge Desjardins, D. Gaudreau, T. Haltigin, S. Millington-Veloza, A. Rubi, José C. Aponte, Nicolas Gorius, Allen Lunsford, B. Allen, J. E. Grindlay, David Joseph Guevel, D. Hoak, Jaesub Hong, D. L. Schrader, J. Bayron, Oleksiy Golubov, Paul Sánchez, J. Stromberg, Masatoshi Hirabayashi, Christine Hartzell, S. Oliver, M. Rascon, A. Harch, J. Joseph, S. W. Squyres, D. C. Richardson, Joshua P. Emery, L. McGraw, R. R. Ghent, Richard P. Binzel, M. Al Asad, C. L. Johnson, L. Philpott, H. C. M. Susorney, E. A. Cloutis, R. D. Hanna, H. C. Connolly, F. Ciceri, A. R. Hildebrand, E.-M. Ibrahim, L. B. Breitenfeld, T. D. Glotch, A. D. Rogers, B. E. Clark, Salvatore Ferrone, Cristina A. Thomas, H. Campins, Y. R. Fernández, W. Chang, A. Cheuvront, D. Trang, Shogo Tachibana, Hisayoshi Yurimoto, J. R. Brucato, Giovanni Poggiali, M. Pajola, E. Dotto, E. Mazzotta Epifani, M. K. Crombie, C. Lantz, M. R. M. Izawa, J. de León, J. Licandro, J. L. Rizos Garcia, S. J. Clemett, Cristina A. Thomas, S. Van wal, Makoto Yoshikawa, Julie Bellerose, S. Bhaskaran, C. Allan Boyles, S. R. Chesley, C. M. Elder, Davide Farnocchia, A. Harbison, Brook S. Kennedy, Abigail L. Knight, N. Martinez-Vlasoff, Nickolaos Mastrodemos, Timothy McElrath, W. M. Owen, R. Park, B. Rush, Linda Swanson, Y. Takahashi, D. Velez, K. Yetter, C. Thayer, C. Adam, Peter G. Antreasian, Joel A. Bauman, A. J. Ryan, B. Carcich, M. Corvin, J. Geeraert, J. H. Hoffman, Jason M. Leonard, Erik J. Lessac‐Chenen, A. Levine, James McAdams, Leilah K. McCarthy, Derek Nelson, Brian R. Page, John Pelgrift, Eric Sahr, K. Stakkestad, Dale Stanbridge, Daniel R. Wibben, B. G. Williams, Kenneth E. Williams, Peter Wolff, P. O. Hayne, D. Kubitschek, M. A. Barucci, J. D. P. Deshapriya, S. Fornasier, M. Fulchignoni, P. H. Hasselmann, F. Merlin, A. Praet, E. B. Bierhaus, O. Billett, A. Boggs, Brian Buck, S. Carlson-Kelly, Jorge Cerna, K. Chaffin, E. Church, Michael E. Coltrin, J. Daly, A.F. deGuzman, R. Dubisher, D. Eckart, D. Ellis, P. Falkenstern, A. T. Fisher, Mark Fisher, Paul J. Fleming, K. Fortney, S. Francis, S. Freund, S. Gonzales, P. Haas, A. Hasten, D. Hauf, A. Hilbert, D. Howell, F. Jaen, Nimesh Jayakody, M. Jenkins, K. Johnson, Mathilde Lefevre, H. Ma, Courtney Mario, Kimberly K. Martin, C. May, M. McGee, B.I. Miller, C. Miller, Graham Miller, A. Mirfakhrai, E. Muhle, Chris Norman, Ryan Olds, C. L. Parish, M. Ryle, M. Schmitzer, Paul S. Sherman, M. Skeen, M. Susak, B. Sutter, Quoc Phuong Tran, Chris Welch, RP Witherspoon, John A. Wood, J. Zareski, M. Arvizu-Jakubicki, Erik Asphaug, E. Audi, Ronald‐Louis Ballouz, R. Bandrowski, K. J. Becker, K. J. Becker, S. P. Bendall, C. A. Bennett, H. Bloomenthal, Deborah Blum, W. V. Boynton, J. Brodbeck, K. N. Burke, Matt Chojnacki, A. Colpo, J. L. Contreras, J. A. Cutts, C. Drouet d’Aubigny, David A. Dean, D. N. DellaGiustina, B. Diallo, D. Drinnon, Kristofer Drozd, H. Enos, R. Enos, C. Fellows, T. Ferro, Matthew R. Fisher, G. Fitzgibbon, Mike Fitzgibbon, J. Forelli, T. Forrester, I. Galinsky, R. García, Andrew Gardner, D. R. Golish, Namrah Habib, D. Hamara, D. Hammond, Kevin J. Hanley, K. Harshman, C. W. Hergenrother, Katja Herzog, D. H. Hill, C. Hoekenga, S. Hooven, E. S. Howell, E. Huettner, A. Janakus, J. H. Jones, Theodore Kareta, John Kidd, K. Kingsbury, S. S. Balram‐Knutson, L. Koelbel, Josef Kreiner, Diane Lambert, D. S. Lauretta, Collin Lewin, B. Lovelace, M. Loveridge, Manuel Luján, C. Maleszewski, Renu Malhotra, K. Marchese, E. McDonough, N. Mogk, V. Morrison, Elin M. Morton, Roberto P. Muñoz, Jon Nelson, M. C. Nolan, J. Padilla, R. Pennington, Anjani T. Polit, N. Ramos, V. Reddy, M. Riehl, B. Rizk, H. L. Roper, S. Salazar, S. R. Schwartz, Sanford Selznick, N. Shultz, Peter H. Smith, S. Stewart, Sarah Sutton, T. D. Swindle, Yuhui Tang, M. M. Westermann, C. W. V. Wolner, D. Worden, T. J. Zega, Z. Zeszut, A. Bjurstrom, L. Bloomquist, C. Dickinson, E. Keates, J. Liang, V. Nifo, Aster G. Taylor, F. Teti, M. A. Caplinger, H. Bowles, S. Carter, S. Dickenshied, D. Doerres, T. Fisher, W. Hagee, J. R. Hill, Mark Miner, D. Noss, N. Piacentine, Matthew J. Smith, Alexandra Toland, P. Wren, Marc Bernacki‫, Daniel Pino Muñoz, Sei‐ichiro Watanabe, Scott A. Sandford, A. Aqueche, Benjamin W. Ashman, M. K. Barker, A. Bartels, K. Berry, Brent J. Bos, Rich Burns, A. Calloway, Russell Carpenter, N. Castro, Richard Cosentino, Jennifer Donaldson, Jason P. Dworkin, J. Elsila Cook, C. Emr, David Everett, D. Fennell, K. Fleshman, David Folta, D. Gallagher, J. B. Garvin, Kenneth M. Getzandanner, D. P. Glavin, Scott M. Hull, Krista L. Hyde, H. Ido, A. Ingegneri, N. Jones, P. Kaotira, L. F. Lim, Andrew J. Liounis, C. C. Lorentson, David Alegre Lorenz, Joshua Lyzhoft, E. Mazarico, R. G. Mink, William Moore, Michael C. Moreau, S. Mullen, Jenő Nagy, G. A. Neumann, Joseph A. Nuth, D. Poland, D. C. Reuter, L. Rhoads, S. Rieger, D. D. Rowlands, D. Sallitt, A. Scroggins, George Shaw, Amy Simon, Jason C. Swenson, P. Vasudeva, M. L. Wasser, Ronald S. Zellar, J. N. Grossman, G. Johnston, M. D. Morris, Johan Wendel, Aaron S. Burton, L. P. Keller, L. McNamara, S. Messenger, K. Nakamura‐Messenger, A. N. Nguyen, K. Righter, Eric M. Queen, K. Bellamy, K. Dill, Scott Gardner, M. Giuntini, B. Key, Joe Kissell, Д. Паттерсон, David Vaughan, B. Wright, R. W. Gaskell, L. Le Corre, Jian‐Yang Li, J. L. Molaro, E. E. Palmer, M. A. Siegler, P. Tricarico, J. R. Weirich, X.-D. Zou, T. R. Ireland, K. T. Tait, P. A. Bland, Saadat Anwar, N. Bojorquez-Murphy, P. R. Christensen, C. W. Haberle, G. Mehall, K. Rios, I. A. Franchi, B. Rozitis, C. B. Beddingfield, J. R. Marshall, D. N. Brack, A. S. French, Jay W. McMahon, D. J. Scheeres, E. R. Jawin, T. J. McCoy, S. S. Russell, M. Killgore, W. F. Bottke, V. E. Hamilton, H. H. Kaplan, K. J. Walsh, J. L. Bandfield, B. C. Clark, M. Chodas, M. Lambert, Rebecca Masterson, M. G. Daly, J. Freemantle, J. A. Seabrook, O. S. Barnouin, K. L. Craft, R. T. Daly, C. M. Ernst, R. C. Espiritu, Mark E. Holdridge, Michael Jones, Hari Nair, L. Nguyen, J. Peachey, M. E. Perry, J. Plescia, J. H. Roberts, Josh Steele, R. E. Turner, J. Backer, K. L. Edmundson, J. Mapel, M. P. Milazzo, S. Sides, C. Manzoni, B. May, Marco Delbò, G. Libourel, Patrick Michel, A. Ryan, Florian Thuillet, Bernard Marty - Nature Communications 2019 被引用: 900

Abstract During its approach to asteroid (101955) Bennu, NASA’s Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft surveyed Bennu’s immediate environment, photometric properties, and rotation state. Discovery of a dusty environment, a natural satellite, or unexpected asteroid characteristics would have had consequences for the mission’s safety and observation strategy. Here we show that spacecraft observations during this period were highly sensitive to satellites (sub-meter scale) but reveal none, although later navigational images indicate that further investigation is needed. We constrain average dust production in September 2018 from Bennu’s surface to an upper limit of 150 g s –1 averaged over 34 min. Bennu’s disk-integrated photometric phase function validates measurements from the pre-encounter astronomical campaign. We demonstrate that Bennu’s rotation rate is accelerating continuously at 3.63 ± 0.52 × 10 –6 degrees day –2 , likely due to the Yarkovsky–O’Keefe–Radzievskii–Paddack (YORP) effect, with evolutionary implications.