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(2019 HF4)
Classification: Apollo [NEO]          SPK-ID: 3841669
[ 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 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3811799868113354 0.00027718  
a 1.59515889223538 0.0011668 au
q .9871162467311135 0.0002799 au
i 3.844832313700485 0.0019332 deg
node 34.38498824326165 0.016078 deg
peri 153.4761489505894 0.15038 deg
M 43.65389906242898 0.25127 deg
tp 2459307.267124166969
(2021-Apr-02.76712417)		 0.61153 TDB
period 735.8755114623566
2.01		 0.80738
0.00221		 d
yr
n .4892131812955643 0.00053675 deg/d
Q 2.203201537739647 0.0016115 au
   Orbit Determination Parameters
   # obs. used (total)      10  
   data-arc span      2 days  
   first obs. used      2019-04-23  
   last obs. used      2019-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .65498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 21:14:24  

Additional Information
 Earth MOID = .00616417 au 
 Jupiter MOID = 2.75032 au 
 T_jup = 4.283 
[ 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 27.6   .19029 MPO467582 autocmod 2.6q

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