Radar Imaging of binary near-Earth asteroid (66391) 1999 KW4

被引：254
|
作者：
Ostro, Steven. J.
Margot, Jean-Luc
Benner, Lance A. M.
Giorgini, Jon D.
Scheeres, Daniel J.
Fahnestock, Eugene G.
Broschart, Stephen B.
Bellerose, Julie
Nolan, Michael C.
Magri, Christopher
Pravec, Petr
Scheirich, Petr
Rose, Randy
Jurgens, Raymond F.
De Jong, Eric M.
Suzuki, Shigeru
机构：
[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
[2] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA
[3] Univ Michigan, Dept Aerosp Engn, Ann Arbor, MI 48109 USA
[4] Arecibo Observ, Arecibo, PR 00612 USA
[5] Univ Maine, Farmington, ME 04938 USA
[6] Acad Sci Czech Republ, Astron Inst, CZ-25165 Ondrejov, Czech Republic
来源：
SCIENCE | 2006年 / 314卷 / 5803期
关键词：
D O I：
10.1126/science.1133622
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
High-resolution radar images reveal near-Earth asteroid ( 66391) 1999 KW4 to be a binary system. The similar to 1.5-kilometer-diameter primary ( Alpha) is an unconsolidated gravitational aggregate with a spin period similar to 2.8 hours, bulk density similar to 2 grams per cubic centimeter, porosity similar to 50%, and an oblate shape dominated by an equatorial ridge at the object's potential-energy minimum. The similar to 0.5-kilometer secondary ( Beta) is elongated and probably is denser than Alpha. Its average orbit about Alpha is circular with a radius similar to 2.5 kilometers and period similar to 17.4 hours, and its average rotation is synchronous with the long axis pointed toward Alpha, but librational departures from that orientation are evident. Exotic physical and dynamical properties may be common among near-Earth binaries.
引用
收藏
页码：1276 / 1280
页数：5
相关论文
共 50 条
  • [1] Dynamical configuration of binary near-Earth asteroid (66391) 1999 KW4
    Scheeres, D. J.
    Fahnestock, E. G.
    Ostro, S. J.
    Margot, J. -L.
    Benner, L. A. M.
    Broschart, S. B.
    Bellerose, J.
    Giorgini, J. D.
    Nolan, M. C.
    Magri, C.
    Pravec, P.
    Scheirich, P.
    Rose, R.
    Jurgens, R. F.
    De Jong, E. M.
    Suzuki, S.
    [J]. SCIENCE, 2006, 314 (5803) : 1280 - 1283
  • [2] Simulation and analysis of the dynamics of binary near-Earth Asteroid (66391) 1999 KW4
    Fahnestock, Eugene G.
    Scheeres, Daniel J.
    [J]. ICARUS, 2008, 194 (02) : 410 - 435
  • [3] PHOTOMETRY OF BINARY NEAR EARTH ASTEROID (66391) 1999 KW4
    Sonka, Adrian Bruno
    Birlan, Mirel
    Nedelcu, Dan Alin
    Trelia, Mirela Madalina
    [J]. ROMANIAN ASTRONOMICAL JOURNAL, 2019, 29 (02): : 149 - 158
  • [4] Detailed prediction for the BYORP effect on binary near-Earth Asteroid (66391) 1999 KW4 and implications for the binary population
    McMahon, Jay
    Scheeres, Daniel
    [J]. ICARUS, 2010, 209 (02) : 494 - 509
  • [5] Near-earth asteroid (66391) Moshup (1999 KW4) observing campaign: Results from a global planetary defense characterization exercise
    Reddy, Vishnu R.
    Kelley, Michael S. E.
    Dotson, Jessie
    Landis, Rob R. A.
    McGraw, Lauren E. A.
    Micheli, Marco A.
    Moskovitz, Nicholas A.
    Sanchez, Juan A. M.
    Taylor, Patrick A. J.
    Wheeler, Lorien
    Bauer, James M. P.
    Brucker, Melissa J.
    Devogele, Maxime C.
    Emery, Joshua P.
    Hainaut, Olivier A.
    Hickson, Dylan C. E.
    Koschny, Detlef
    Larsen, Jeffrey A. A.
    Marshall, Sean E. K.
    McMillan, Robert
    Skiff, Brian A. F.
    Venditti, Flaviane C. F.
    Virkki, Anne K.
    Yang, Bin
    Zambrano-Marin, Luisa F.
    [J]. ICARUS, 2022, 374
  • [6] A satellite orbit drift in binary near-Earth asteroids (66391) 1999 KW4 and (88710) 2001 SL9-Indication of the BYORP effect
    Scheirich, P.
    Pravec, P.
    Kusnirak, P.
    Hornoch, K.
    McMahon, J.
    Scheeres, D. J.
    Capek, D.
    Pray, D. P.
    Kucakova, H.
    Galad, A.
    Vrastil, J.
    Krugly, Yu N.
    Moskovitz, N.
    Avner, L. D.
    Skiff, B.
    McMillan, R. S.
    Larsen, J. A.
    Brucker, M. J.
    Tubbiolo, A. F.
    Cooney, W. R.
    Gross, J.
    Terrell, D.
    Burkhonov, O.
    Ergashev, K. E.
    Ehgamberdiev, Sh A.
    Fatka, P.
    Durkee, R.
    Schunova, E. Lilly
    Inasaridze, R. Ya
    Ayvazian, V. R.
    Kapanadze, G.
    Gaftonyuk, N. M.
    Sanchez, J. A.
    Reddy, V
    McGraw, L.
    Kelley, M. S.
    Molotov, I. E.
    [J]. ICARUS, 2021, 360
  • [7] Equilibrium points and associated periodic orbits in the gravity of binary asteroid systems: (66391) 1999 KW4 as an example
    Yu Shi
    Yue Wang
    Shijie Xu
    [J]. Celestial Mechanics and Dynamical Astronomy, 2018, 130
  • [8] Equilibrium points and associated periodic orbits in the gravity of binary asteroid systems: (66391) 1999 KW4 as an example
    Shi, Yu
    Wang, Yue
    Xu, Shijie
    [J]. CELESTIAL MECHANICS & DYNAMICAL ASTRONOMY, 2018, 130 (04):
  • [9] A STRATEGY FOR LANDINGS ON SMALL BINARY BODIES: APPLICATION TO ASTEROID SYSTEM 1999 KW4
    Tardivel, Simon
    Scheeres, Daniel J.
    [J]. SPACEFLIGHT MECHANICS 2011, PTS I-III, 2011, 140 : 1141 - +
  • [10] SEARCH FOR STABLE ORBITS AROUND THE BINARY ASTEROID SYSTEMS 1999 KW4 AND DIDYMOS
    Oliveira, Thais C.
    Prado, Antonio F. B. A.
    [J]. REVISTA MEXICANA DE ASTRONOMIA Y ASTROFISICA, 2020, 56 (01) : 113 - 128
12345