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(2019 HC4)
Classification: Centaur          SPK-ID: 3841686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5544456653919279 3.726e-06  
a 8.781504356194802 7.5078e-05 au
q 3.912637330282262 1.9103e-06 au
i 134.2695059127437 2.4981e-05 deg
node 12.16537770631271 3.149e-05 deg
peri 99.62628904196932 8.7314e-05 deg
M 29.66743379037461 0.00039493 deg
tp 2458417.197902346185
(2018-Oct-25.69790235)
0.00061799 TDB
period 9504.993156734123
26.02
0.1219
0.0003337
d
yr
n .03787483000394863 4.8572e-07 deg/d
Q 13.65037138210734 0.0001167 au
  Orbit Determination Parameters
   # obs. used (total)      81  
   data-arc span      1342 days (3.67 yr)  
   first obs. used      2016-08-13  
   last obs. used      2020-04-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .38257  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 21:14:24  

Additional Information
 Earth MOID = 3.25617 au 
 Jupiter MOID = .0124352 au 
 T_jup = -0.917 
[ 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 15.0   .52384 E2020R12 autocmod 2.8

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