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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1516500165011109 1.0077e-07  
a 3.22223755456479 7.0786e-08 au
q 2.733585176244541 3.0263e-07 au
i 22.86653527169279 9.7931e-06 deg
node 67.67341032044698 1.6429e-05 deg
peri 350.5634333211688 3.6133e-05 deg
M 277.6478731993572 2.4466e-05 deg
tp 2459483.789186678109
(2021-Sep-26.28918668)
0.00014284 TDB
period 2112.685050931329
5.78
6.9617e-05
1.906e-07
d
yr
n .1703992745351713 5.615e-09 deg/d
Q 3.71088993288504 8.1521e-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 = 1.74865 au 
 Jupiter MOID = 1.64309 au 
 T_jup = 3.048 
[ 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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