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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3792618965966699 0.00041542  
a 1.58912736490463 0.0010437 au
q .9864319065572318 1.2461e-05 au
i 3.853170623029692 0.0033247 deg
node 34.45855333400023 9.6437e-05 deg
peri 153.1347739958234 0.0013335 deg
M 307.5796318939903 0.30506 deg
tp 2459307.045239970286
(2021-Apr-02.54523997)		 0.725 TDB
period 731.7057810760707
2.00		 0.72083
0.001974		 d
yr
n .4920010328066181 0.00048469 deg/d
Q 2.191822823252028 0.0014395 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 = .00516321 au 
 Jupiter MOID = 2.76268 au 
 T_jup = 4.295 
[ 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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