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(2020 HW2)
Classification: Aten [NEO]          SPK-ID: 54016641
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.


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Orbital Elements at Epoch 2458959.5 (2020-Apr-20.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3754547505066297 0.0021462  
a .8135713632319932 0.00052108 au
q .5081121300303866 0.0020715 au
i 3.290626747580141 0.019729 deg
node 91.44688606670223 0.046914 deg
peri 271.3681507682043 0.044984 deg
M 236.6314993722812 0.22094 deg
tp 2459051.353073515681
(2020-Jul-20.85307352)
0.25274 TDB
period 268.0352464153685
0.73
0.25751
0.000705
d
yr
n 1.343106941398728 0.0012904 deg/d
Q 1.1190305964336 0.00071672 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      4 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .39975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-22 03:42:08  

Additional Information
 Earth MOID = .0446038 au 
 Jupiter MOID = 4.33368 au 
 T_jup = 7.127 
[ 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 24.865   .31141 1 autocmod 2.8

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