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226398 (2003 QH20)
Classification: Main-belt Asteroid          SPK-ID: 2226398
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1896558444339002 5.4492e-08  
a 3.050555029696697 2.4975e-08 au
q 2.471999439547488 1.645e-07 au
i 13.02788342364659 9.6995e-06 deg
node 356.1424348545664 1.8045e-05 deg
peri 301.5948666296322 2.9965e-05 deg
M 88.38691242830839 2.3021e-05 deg
tp 2458522.693355452790
(2019-Feb-08.19335545)
0.00012463 TDB
period 1946.107034528613
5.33
2.39e-05
6.543e-08
d
yr
n .1849846866656023 2.2718e-09 deg/d
Q 3.629110619845906 2.9712e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      5941 days (16.27 yr)  
   first obs. used      2003-08-22  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56296  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 15:35:27  

Additional Information
 Earth MOID = 1.48645 au 
 Jupiter MOID = 1.82407 au 
 T_jup = 3.171 
[ 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 15.0   n/a MPO229950  
diameter diameter 5.760 km 0.474 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226398 (2003 QH20)          Discovered 2003-Aug-22 by NEAT at Palomar
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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