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(2021 HC3)
Classification: Apollo [NEO, PHA]          SPK-ID: 54142826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459337.5 (2021-May-03.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6748414702471982 0.00062721  
a 1.119928634688601 0.0013865 au
q .3641543482834083 0.00025159 au
i 28.33952296833293 0.050203 deg
node 219.5528219331288 0.0029337 deg
peri 132.1469845961467 0.020183 deg
M 313.6630620258771 0.12016 deg
tp 2459393.219701480411
(2021-Jun-27.71970148)
0.041014 TDB
period 432.8963761945186
1.19
0.80392
0.002201
d
yr
n .8316077929888627 0.0015444 deg/d
Q 1.875702921093795 0.0023222 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      7 days  
   first obs. used      2021-04-30  
   last obs. used      2021-05-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .45615  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-08 05:50:49  

Additional Information
 Earth MOID = .0470569 au 
 Jupiter MOID = 3.76429 au 
 T_jup = 5.249 
[ 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 21.45   .4405 E2021J33 autocmod 2.9c

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