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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05385138916764779 4.4447e-08  
a 2.982361817195488 3.0429e-08 au
q 2.82175749033896 1.336e-07 au
i 10.17117293211555 4.9611e-06 deg
node 90.791696132453 2.4578e-05 deg
peri 165.9681463359525 5.4984e-05 deg
M 209.9531303710733 5.2788e-05 deg
tp 2459984.585389146620
(2023-Feb-09.08538915)
0.00028079 TDB
period 1881.217120962621
5.15
2.8791e-05
7.883e-08
d
yr
n .1913654707840356 2.9288e-09 deg/d
Q 3.142966144052015 3.2068e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7297 days (19.98 yr)  
   first obs. used      2001-02-16  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52196  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:17:38  

Additional Information
 Earth MOID = 1.80572 au 
 Jupiter MOID = 1.91478 au 
 T_jup = 3.233 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457830.5 (2017-Mar-18.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05562355633871429 4.4323e-08  
q 2.817684350756124 1.3373e-07 au
tp 2458101.153032435632
(2017-Dec-13.65303244)
0.00026258 TDB
node 90.83363060813792 2.4606e-05 deg
peri 165.3748576272935 5.3771e-05 deg
i 10.16495229634139 4.9579e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7297 days (19.98 yr)  
   first obs. used      2001-02-16  
   last obs. used      2021-02-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52196  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 03:17:38  

Additional Information
 Jupiter MOID = 1.91478 au 
 T_jup = 3.233 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.964542120570581E-15 -5.786806497505494E-15 4.270710529378455E-13 1.185765391732637E-16 5.194040386450169E-14 2.654216511975675E-15
q -5.786806497505494E-15 1.788316912167355E-14 1.429741834319077E-12 -1.530240273438625E-15 3.167424024134045E-13 -7.546370721136719E-15
tp 4.270710529378455E-13 1.429741834319077E-12 6.894918637306201E-8 -2.535166478264417E-11 1.257532726497237E-8 -3.00165081827414E-12
node 1.185765391732637E-16 -1.530240273438625E-15 -2.535166478264417E-11 6.054545047485713E-10 -6.004294600702101E-10 -2.089328448679078E-11
peri 5.194040386450169E-14 3.167424024134045E-13 1.257532726497237E-8 -6.004294600702101E-10 2.891346034629391E-9 1.996495648545145E-11
i 2.654216511975675E-15 -7.546370721136719E-15 -3.00165081827414E-12 -2.089328448679078E-11 1.996495648545145E-11 2.458028376604934E-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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