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(2020 HG9)
Classification: Aten [NEO]          SPK-ID: 54016914
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4186165310805497 0.00021746  
a .8641767388142115 1.3021e-05 au
q .502418070171304 0.00019549 au
i 1.737139254516672 0.0011667 deg
node 64.420623345557 0.0020167 deg
peri 308.975957347072 0.0030204 deg
M 279.021995066824 0.024064 deg
tp 2459066.503483499321
(2020-Aug-05.00348350)
0.021106 TDB
period 293.4284943098252
0.80
0.0066318
1.816e-05
d
yr
n 1.226874713877935 2.7729e-05 deg/d
Q 1.225935407457119 1.8472e-05 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      25 days  
   first obs. used      2020-04-28  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .4457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-02 06:15:17  

Additional Information
 Earth MOID = .00313196 au 
 Jupiter MOID = 4.23708 au 
 T_jup = 6.761 
[ 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 23.366   .30998 18 autocmod 2.8

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