+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266889 (2009 WW46) Classification: Main-belt Asteroid          SPK-ID: 2266889 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05405958440939514 5.0655e-08   a 2.981804574241611 3.4448e-08 au q 2.820609458168076 1.4527e-07 au i 10.17200553276292 5.1541e-06 deg node 90.79142816353242 2.8909e-05 deg peri 165.8926738106985 5.7671e-05 deg M 171.7631102482012 5.2739e-05 deg tp 2458103.185704644757 (2017-Dec-15.68570464) 0.00027154 TDB period 1880.689898203975 5.15 3.2591e-05 8.923e-08 d yr n .191419117178113 3.3171e-09 deg/d Q 3.142999690315146 3.631e-08 au   Orbit Determination Parameters    # obs. used (total)      340      data-arc span      7213 days (19.75 yr)      first obs. used      2001-02-16      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56246      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:21:10   Additional Information  Earth MOID = 1.8063 au   Jupiter MOID = 1.91578 au   T_jup = 3.233  [ hide covariance matrix ] Orbital Elements at Epoch 2457614.5 (2016-Aug-14.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05604609813863341 5.0385e-08   q 2.815161813749829 1.4535e-07 au tp 2458103.821461896439 (2017-Dec-16.32146190) 0.00026403 TDB node 90.90259649282883 2.8949e-05 deg peri 165.9288758112078 5.6458e-05 deg i 10.16536537265102 5.1486e-06 deg   Orbit Determination Parameters    # obs. used (total)      340      data-arc span      7213 days (19.75 yr)      first obs. used      2001-02-16      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56246      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:21:10   Additional Information  Jupiter MOID = 1.91578 au   T_jup = 3.233  Orbit Covariance (6×6)   e q tp node peri i e 2.538694218422058E-15 -7.151800326510225E-15 -4.499401104891188E-13 1.244517466032719E-15 -1.700052549560305E-13 3.642570498426951E-15 q -7.151800326510225E-15 2.112592876161173E-14 3.337726715622356E-12 -2.647142132537799E-15 8.117358288126614E-13 -9.223733275566222E-15 tp -4.499401104891188E-13 3.337726715622356E-12 6.971038038251523E-8 -2.768218479249543E-11 1.282163354076435E-8 -6.289867954719037E-12 node 1.244517466032719E-15 -2.647142132537799E-15 -2.768218479249543E-11 8.380491953096155E-10 -8.29805111897909E-10 -4.184599208311785E-11 peri -1.700052549560305E-13 8.117358288126614E-13 1.282163354076435E-8 -8.29805111897909E-10 3.187482743190693E-9 3.976371844470285E-11 i 3.642570498426951E-15 -9.223733275566222E-15 -6.289867954719037E-12 -4.184599208311785E-11 3.976371844470285E-11 2.650807068734065E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.2   n/a MPO454983   266889 (2009 WW46)          Discovered 2009-Nov-18 by Mt. Lemmon Survey at Mount Lemmon Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ show close-approach data ] Alternate Designations  2009 WW46 = 2006 DJ64  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 08:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin