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266836 (2009 UK18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2266836
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1509002534163889 1.0216e-07  
a 3.230545128970891 7.1848e-08 au
q 2.743055050336102 3.0589e-07 au
i 22.90188859324955 9.8068e-06 deg
node 67.74116196035021 1.6372e-05 deg
peri 349.4120769856276 3.6393e-05 deg
M 210.8472332458932 2.5077e-05 deg
tp 2459479.200671663335
(2021-Sep-21.70067166)
0.00014488 TDB
period 2120.860703310358
5.81
7.0753e-05
1.937e-07
d
yr
n .1697424066738999 5.6627e-09 deg/d
Q 3.718035207605678 8.269e-08 au
  Orbit Determination Parameters
   # obs. used (total)      339  
   data-arc span      7094 days (19.42 yr)  
   first obs. used      1998-12-14  
   last obs. used      2018-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56509  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 10:15:19  

Additional Information
 Earth MOID = 1.75819 au 
 Jupiter MOID = 1.63717 au 
 T_jup = 3.046 
[ 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 14.9   n/a MPO440312  
diameter diameter 4.663 km 0.203 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

266836 (2009 UK18)          Discovered 2009-Oct-20 by Sachs, J. at Tzec Maun
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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