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(2020 WD)
Classification: Apollo [NEO]          SPK-ID: 54088803
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3772602321411536 0.00033663  
a 1.579373174754823 0.00084359 au
q .9835384842093077 6.3364e-06 au
i .6337826169600561 0.00037926 deg
node 202.5279733557198 0.0063476 deg
peri 185.6469453905746 0.0033781 deg
M 286.9183922466502 0.058523 deg
tp 2459147.674020859611
(2020-Oct-25.17402086)
8.6344e-05 TDB
period 724.9792271713046
1.98
0.58085
0.00159
d
yr
n .4965659518337289 0.00039784 deg/d
Q 2.175207865300338 0.0011618 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      24 days  
   first obs. used      2020-11-16  
   last obs. used      2020-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .58518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-12 05:24:29  

Additional Information
 Earth MOID = .00278359 au 
 Jupiter MOID = 3.27456 au 
 T_jup = 4.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459184.5 (2020-Dec-01.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3797021871990652 0.00033273  
q .9840700354331755 7.1369e-06 au
tp 2459147.903824936849
(2020-Oct-25.40382494)
0.00049794 TDB
node 201.5647049398093 0.0042636 deg
peri 186.8824285500814 0.00083381 deg
i .6147220290533426 0.00041253 deg
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      24 days  
   first obs. used      2020-11-16  
   last obs. used      2020-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .58518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-12 05:24:29  

Additional Information
 Jupiter MOID = 3.27456 au 
 T_jup = 4.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.107069418794573E-7 -2.372729155235905E-9 -1.644494546358308E-7 -1.407889354453878E-6 2.011151407985855E-7 1.372449222160424E-7
q -2.372729155235905E-9 5.093520558869281E-11 3.541334477649543E-9 3.007836790989768E-8 -4.192279672659934E-9 -2.942260833078928E-9
tp -1.644494546358308E-7 3.541334477649543E-9 2.47947855341043E-7 2.072454043314391E-6 -2.751175909281759E-7 -2.040238830175632E-7
node -1.407889354453878E-6 3.007836790989768E-8 2.072454043314391E-6 1.81786371906989E-5 -2.856583060515168E-6 -1.742304465883007E-6
peri 2.011151407985855E-7 -4.192279672659934E-9 -2.751175909281759E-7 -2.856583060515168E-6 6.952413479420044E-7 2.460493231053864E-7
i 1.372449222160424E-7 -2.942260833078928E-9 -2.040238830175632E-7 -1.742304465883007E-6 2.460493231053864E-7 1.701837068254464E-7

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 28.213   .41173 8 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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