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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06718813349521569 4.279e-08  
a 2.406408469004761 9.0369e-09 au
q 2.244726375545252 1.0605e-07 au
i 4.239060738514275 4.0687e-06 deg
node 147.2520304929211 4.7669e-05 deg
peri 1.548069812310657 5.4823e-05 deg
M 301.0468588037 2.6153e-05 deg
tp 2458823.783637015243
(2019-Dec-06.28363702)
9.9037e-05 TDB
period 1363.491540812625
3.73
7.6806e-06
2.103e-08
d
yr
n .2640280406766912 1.4873e-09 deg/d
Q 2.56809056246427 9.6441e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1614  
   data-arc span      16870 days (46.19 yr)  
   first obs. used      1973-09-29  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52287  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:18:43  

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 14.6   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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