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392694 (2011 WR54)
Classification: Main-belt Asteroid          SPK-ID: 2392694
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02508194236680148 7.9023e-08  
a 3.131952875182971 6.222e-08 au
q 3.053397413672093 2.4002e-07 au
i 13.91701839947598 8.0182e-06 deg
node 55.38646667521942 3.2086e-05 deg
peri 164.9570688707533 0.00016879 deg
M 18.57328464868689 0.00016148 deg
tp 2458896.050234564975
(2020-Feb-16.55023457)
0.00090939 TDB
period 2024.516194515296
5.54
6.033e-05
1.652e-07
d
yr
n .1778202619348225 5.299e-09 deg/d
Q 3.210508336693848 6.3781e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      7084 days (19.39 yr)  
   first obs. used      2000-11-28  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:24:23  

Additional Information
 Earth MOID = 2.04452 au 
 Jupiter MOID = 1.77857 au 
 T_jup = 3.167 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457157.5 (2015-May-15.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02441845871991542 8.0124e-08  
q 3.056096868423404 2.4217e-07 au
tp 2456852.767648415354
(2014-Jul-14.26764842)
0.00094446 TDB
node 55.40699165520645 3.2083e-05 deg
peri 161.7232937072267 0.00017034 deg
i 13.91706903314439 8.0181e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      7084 days (19.39 yr)  
   first obs. used      2000-11-28  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 01:24:23  

Additional Information
 Jupiter MOID = 1.77857 au 
 T_jup = 3.167 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.419809901845877E-15 -1.881882886852929E-14 -2.142540525304014E-11 -8.574384100921888E-15 -3.63212743984668E-12 2.422540131540791E-15
q -1.881882886852929E-14 5.86453415596979E-14 4.104412239545396E-11 2.739584618901178E-14 6.861569438933377E-12 -5.474669116242158E-15
tp -2.142540525304014E-11 4.104412239545396E-11 8.920062164661374E-7 -2.504888261102588E-10 1.580619153636433E-7 8.977699188846882E-11
node -8.574384100921888E-15 2.739584618901178E-14 -2.504888261102588E-10 1.029289028761295E-9 -1.043740664642638E-9 -5.967853009959134E-11
peri -3.63212743984668E-12 6.861569438933377E-12 1.580619153636433E-7 -1.043740664642638E-9 2.901438350126311E-8 7.40318183349766E-11
i 2.422540131540791E-15 -5.474669116242158E-15 8.977699188846882E-11 -5.967853009959134E-11 7.40318183349766E-11 6.429015061632773E-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 15.4   n/a MPO434456  
diameter diameter 5.999 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.085   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

392694 (2011 WR54)          Discovered 2010-May-20 by WISE at WISE
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2011 WR54 = 2010 KL43 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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