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(2019 YF4)
Classification: Apollo [NEO]          SPK-ID: 3959226
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2149563734318176 3.9548e-06  
a 1.262759122975484 6.511e-06 au
q .9913210013827313 1.1773e-07 au
i .2063557875064564 4.8318e-06 deg
node 260.145447244145 0.00037785 deg
peri 216.6447805495067 0.00038609 deg
M 232.6633244308375 0.0017871 deg
tp 2459383.828593145210
(2021-Jun-18.32859315)
0.0039908 TDB
period 518.2976015140956
1.42
0.0040087
1.098e-05
d
yr
n .6945816437281148 5.3721e-06 deg/d
Q 1.534197244568237 7.9106e-06 au
  Orbit Determination Parameters
   # obs. used (total)      88  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      28 days  
   first obs. used      2019-12-29  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .4667  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 07:28:06  

Additional Information
 Earth MOID = .00778792 au 
 Jupiter MOID = 3.53818 au 
 T_jup = 5.083 
[ 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 27.0   .38767 E2020-AB7 autocmod 2.8

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