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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.arcLast 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 ]
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