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(2020 WC4)
Classification: Apollo [NEO]          SPK-ID: 54093099
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2627109378494581 0.00024133  
a 1.283455100010107 0.0003917 au
q .9462774069987819 2.0979e-05 au
i 1.353599536162243 0.0016223 deg
node 238.7570346656219 0.0036285 deg
peri 225.1282197095699 0.0068622 deg
M 123.7806815215376 0.052322 deg
tp 2459213.891993358894
(2020-Dec-30.39199336)
0.0064181 TDB
period 531.091617712251
1.45
0.24313
0.0006657
d
yr
n .6778491469150817 0.00031031 deg/d
Q 1.620632793021433 0.0004946 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      3 days  
   first obs. used      2020-11-24  
   last obs. used      2020-11-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .4559  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:18:46  

Additional Information
 Earth MOID = .00345682 au 
 Jupiter MOID = 3.50976 au 
 T_jup = 5.012 
[ show covariance matrix ]

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 28.9   .21595 E2021-CC3 autocmod 2.8

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