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243500 (2009 UK139)
Classification: Main-belt Asteroid          SPK-ID: 2243500
[ 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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06143013398443022 4.9188e-08  
a 3.170084127379845 4.7811e-08 au
q 2.975345434692986 1.5751e-07 au
i 9.230097598266484 1.0104e-05 deg
node .9938655038738934 3.2441e-05 deg
peri 95.82698456428402 0.00010041 deg
M 273.0818975929801 9.925e-05 deg
tp 2459498.251232192403
(2021-Oct-10.75123219)		 0.00057485 TDB
period 2061.600962595252
5.64		 4.6639e-05
1.277e-07		 d
yr
n .174621571551273 3.9504e-09 deg/d
Q 3.364822820066705 5.0748e-08 au
   Orbit Determination Parameters
   # obs. used (total)      316  
   data-arc span      7105 days (19.45 yr)  
   first obs. used      2000-03-11  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .65252  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:15:51  

Additional Information
 Earth MOID = 2.01089 au 
 Jupiter MOID = 1.74877 au 
 T_jup = 3.179 
[ 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 15.3   n/a MPO494333  
diameter diameter 4.358 km 0.401 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243500 (2009 UK139)          Discovered 2009-Oct-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

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