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(2020 HD)
Classification: Amor [NEO]          SPK-ID: 54016543
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 2458957.5 (2020-Apr-18.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5347849025045711 0.001541  
a 2.357931099923868 0.0082955 au
q 1.096945146538586 0.00022581 au
i 4.251083081330708 0.0094792 deg
node 355.9263243457356 0.006482 deg
peri 222.2230261359049 0.010137 deg
M 356.8336264954905 0.015231 deg
tp 2458969.132009141549
(2020-Apr-29.63200914)		 0.0058482 TDB
period 1322.498209700713
3.62		 6.9791
0.01911		 d
yr
n .272212088726736 0.0014365 deg/d
Q 3.61891705330915 0.012732 au
   Orbit Determination Parameters
   # obs. used (total)      31  
   data-arc span      10 days  
   first obs. used      2020-04-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .53973  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:24:59  

Additional Information
 Earth MOID = .103789 au 
 Jupiter MOID = 1.38756 au 
 T_jup = 3.341 
[ 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 24.5   .4662 E2020-HH2 autocmod 2.8

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