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213810 (2003 HG42)
Classification: Main-belt Asteroid          SPK-ID: 2213810
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09683942420896133 4.9797e-08  
a 3.162690162928502 2.6183e-08 au
q 2.85641706859916 1.5476e-07 au
i 11.593876754371 4.292e-06 deg
node 139.3233533213381 2.9759e-05 deg
peri 41.44444022590322 3.9226e-05 deg
M 71.69592079941239 2.4588e-05 deg
tp 2458791.356793383404
(2019-Nov-03.85679338)
0.00014071 TDB
period 2054.392394151131
5.62
2.5512e-05
6.985e-08
d
yr
n .1752342936164106 2.1761e-09 deg/d
Q 3.468963257257845 2.8719e-08 au
  Orbit Determination Parameters
   # obs. used (total)      458  
   data-arc span      7206 days (19.73 yr)  
   first obs. used      2000-10-01  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55266  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:44:12  

Additional Information
 Earth MOID = 1.87279 au 
 Jupiter MOID = 1.54721 au 
 T_jup = 3.165 
[ 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 15.26   n/a E2021B55  
diameter diameter 5.155 km 1.339 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.061   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

213810 (2003 HG42)          Discovered 2003-Apr-27 by LONEOS at Anderson Mesa
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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