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11730 Yanhua (1998 KO31)
Classification: Main-belt Asteroid          SPK-ID: 2011730
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06691630821657504 3.8551e-08  
a 2.405815572963562 7.8299e-09 au
q 2.244827276570896 9.4072e-08 au
i 4.239547458235054 3.9994e-06 deg
node 147.2499428195877 4.4659e-05 deg
peri 1.531791773554885 5.2179e-05 deg
M 46.69056399934358 2.5539e-05 deg
tp 2458823.725937056506
(2019-Dec-06.22593706)
9.6809e-05 TDB
period 1362.987661929993
3.73
6.6539e-06
1.822e-08
d
yr
n .2641256484231408 1.2894e-09 deg/d
Q 2.566803869356228 8.3539e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1790  
   data-arc span      17014 days (46.58 yr)  
   first obs. used      1973-09-29  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:36:12  

Additional Information
 Earth MOID = 1.25595 au 
 Jupiter MOID = 2.41746 au 
 T_jup = 3.516 
[ 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 14.6   n/a MPO492884  
diameter diameter 3.100 km 0.712 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.350   0.186 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11730 Yanhua           Discovered 1998 May 22 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Yan Hua (b. 1984) is a finalist in the 2002 Intel International Science and Engineering Fair for his engineering project. He attends the Jinling High School, Nanjing, Jiangsu, China.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020724/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1998 KO31 = 4310 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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