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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06718813541899221 4.2892e-08  
a 2.406408468172179 9.1236e-09 au
q 2.244726370139217 1.0638e-07 au
i 4.23906081539255 4.0731e-06 deg
node 147.2520327907302 4.8057e-05 deg
peri 1.548066173787367 5.5195e-05 deg
M 301.0468606543186 2.6306e-05 deg
tp 2458823.783629890189
(2019-Dec-06.28362989)
9.9636e-05 TDB
period 1363.491540105003
3.73
7.7543e-06
2.123e-08
d
yr
n .2640280408137159 1.5015e-09 deg/d
Q 2.568090566205141 9.7366e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1598  
   data-arc span      16833 days (46.09 yr)  
   first obs. used      1973-09-29  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52234  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:32:57  

Additional Information
 Earth MOID = 1.25633 au 
 Jupiter MOID = 2.41772 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 14.5   n/a MPO416841  
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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