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226681 (2004 HJ43)
Classification: Main-belt Asteroid          SPK-ID: 2226681
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108988222963716 5.4236e-08  
a 2.247624009279327 1.392e-08 au
q 1.998365153685201 1.2785e-07 au
i 7.987220167432902 6.3436e-06 deg
node 61.23673402554475 3.8066e-05 deg
peri 22.40328465605267 5.3447e-05 deg
M 26.19181215160853 3.3565e-05 deg
tp 2458910.953839885524
(2020-Mar-02.45383989)
0.00011494 TDB
period 1230.789891688785
3.37
1.1433e-05
3.13e-08
d
yr
n .2924950898857633 2.7171e-09 deg/d
Q 2.496882864873454 1.5463e-08 au
  Orbit Determination Parameters
   # obs. used (total)      332  
   data-arc span      7346 days (20.11 yr)  
   first obs. used      1999-12-15  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55889  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 05:56:14  

Additional Information
 Earth MOID = 1.0164 au 
 Jupiter MOID = 2.70603 au 
 T_jup = 3.609 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   n/a MPO352400  

226681 (2004 HJ43)          Discovered 2004-Apr-20 by Siding Spring Survey at Siding Spring
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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