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(2019 HE)
Classification: Apollo [NEO]          SPK-ID: 3841509
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .214087107924849 0.00013405  
a 1.095915085952076 0.00016692 au
q .8612937946693836 1.5752e-05 au
i 20.34172445383281 0.010872 deg
node 210.110318024067 1.3064e-05 deg
peri 281.2264753629052 0.019168 deg
M 44.56804340550958 0.11014 deg
tp 2458948.621805569923
(2020-Apr-09.12180557)
0.11635 TDB
period 419.0480121574945
1.15
0.095737
0.0002621
d
yr
n .8590901031758099 0.00019627 deg/d
Q 1.330536377234768 0.00020265 au
  Orbit Determination Parameters
   # obs. used (total)      61  
   data-arc span      3 days  
   first obs. used      2019-04-21  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .58707  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Apr-24 07:01:35  

Additional Information
 Earth MOID = .000898564 au 
 Jupiter MOID = 3.76344 au 
 T_jup = 5.589 
[ 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 26.7   .49134 MPO467574 autocmod 2.6q

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