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523656 (2011 WO4)
Classification: Apollo [NEO, PHA]          SPK-ID: 2523656
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4973467141064071 1.3995e-07  
a 1.737576323832772 4.7704e-08 au
q .8733984486654526 2.2208e-07 au
i 60.92901793164684 2.2317e-05 deg
node 225.1845433334206 7.721e-06 deg
peri 236.0142266422464 2.7352e-05 deg
M 238.1180034682973 5.8783e-05 deg
tp 2459283.737870959051
(2021-Mar-10.23787096)
0.00014805 TDB
period 836.5930690898736
2.29
3.4452e-05
9.432e-08
d
yr
n .4303167373734552 1.7721e-08 deg/d
Q 2.601754199000092 7.1429e-08 au
  Orbit Determination Parameters
   # obs. used (total)      111  
   data-arc span      2732 days (7.48 yr)  
   first obs. used      2011-11-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .28855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-13 07:43:10  

Additional Information
 Earth MOID = .0309395 au 
 Jupiter MOID = 3.34204 au 
 T_jup = 3.482 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457725.5 (2016-Dec-03.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4970283152971834 1.4015e-07  
q .8740270027285085 2.2219e-07 au
tp 2457610.615485513224
(2016-Aug-10.11548551)
8.1075e-05 TDB
node 225.2013232340403 7.7189e-06 deg
peri 236.030089822767 2.7376e-05 deg
i 60.94327710631335 2.2307e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      111  
   data-arc span      2732 days (7.48 yr)  
   first obs. used      2011-11-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .28855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-13 07:43:10  

Additional Information
 Jupiter MOID = 3.34204 au 
 T_jup = 3.482 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.964280254201849E-14 -3.110229177463866E-14 8.815149575903576E-12 2.062802443263348E-14 2.437360552004364E-12 4.100447185318814E-13
q -3.110229177463866E-14 4.936794707988654E-14 -1.34670810241972E-11 -2.779283052952988E-14 -3.672876899735491E-12 -6.264233979805681E-13
tp 8.815149575903576E-12 -1.34670810241972E-11 6.573113528363705E-9 -4.099527291745122E-11 2.11970406124346E-9 1.876365667961799E-10
node 2.062802443263348E-14 -2.779283052952988E-14 -4.099527291745122E-11 5.958100266977057E-11 -4.019120065442937E-11 2.216954212585343E-11
peri 2.437360552004364E-12 -3.672876899735491E-12 2.11970406124346E-9 -4.019120065442937E-11 7.494564488139765E-10 5.291951992147628E-11
i 4.100447185318814E-13 -6.264233979805681E-13 1.876365667961799E-10 2.216954212585343E-11 5.291951992147628E-11 4.976241514804544E-10

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 19.3   n/a MPO473044  

523656 (2011 WO4)          Discovered 2011-Nov-17 by LINEAR at Socorro
Reference: Last Updated: 2018-10-01

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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